docs: update changelog for v4.0.2 (#318 )

fix: work around git dubious ownership errors in container jobs (#317 )
fix: use rev-parse instead of branch --show-current for older git compat (#303 )
2026-08-21 16:13:13 +01:00 · 2026-07-02 13:45:19 -04:00 · 2026-07-02 13:41:07 -04:00 · 2026-04-10 17:44:48 -04:00 · 2026-03-25 12:27:15 -04:00 · 2026-03-25 12:19:27 -04:00
9 changed files with 980 additions and 123 deletions
--- a/.github/workflows/pull-request-verification.yml
+++ b/.github/workflows/pull-request-verification.yml
@@ -18,6 +18,13 @@ jobs:
    - run: |
        npm install
        npm run all
+    - name: Check dist is up to date
+      run: |
+        if [ -n "$(git diff --name-only dist/)" ]; then
+          echo "::error::dist/index.js is out of date. Run 'npm run all' and commit the result."
+          git diff --stat dist/
+          exit 1
+        fi

  test-inline:
    runs-on: ubuntu-latest
@@ -67,6 +74,63 @@ jobs:
      if: steps.filter.outputs.any != 'true' || steps.filter.outputs.error == 'true'
      run: exit 1

+  test-container-without-token:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # bullseye: git 2.30 + Debian CVE-2022-24765 backport, old "unsafe repository" wording,
+        #           pre-2.32 -> ignores GIT_CONFIG_GLOBAL -> exercises the HOME-only path
+        # bookworm: git 2.39, "dubious ownership" wording, honors GIT_CONFIG_GLOBAL
+        container: ['node:24-bullseye', 'node:24-bookworm']
+        locale: ['']
+        include:
+          # zh_CN: git translates the dubious-ownership message via gettext - proves
+          # detection works on non-English stderr regardless of the container's locale.
+          # A CJK locale is the most adversarial probe (multibyte, non-Latin) whose
+          # catalog actually translates this message (ja does not exist, ko lacks it)
+          - container: 'node:24-bookworm'
+            locale: 'zh_CN.UTF-8'
+    container: ${{ matrix.container }}
+    steps:
+    - uses: actions/checkout@v6
+    - name: Generate locale
+      if: matrix.locale != ''
+      run: |
+        apt-get update
+        apt-get install -y locales
+        echo '${{ matrix.locale }} UTF-8' >> /etc/locale.gen
+        locale-gen
+    - name: Verify dubious ownership is reproduced
+      run: |
+        if git status; then
+          echo "::error::git succeeded - environment no longer reproduces dubious ownership"
+          exit 1
+        fi
+    - name: Verify git message is localized
+      if: matrix.locale != ''
+      env:
+        LC_ALL: ${{ matrix.locale }}
+      run: |
+        if stderr=$(git status 2>&1 >/dev/null); then
+          echo "::error::git succeeded - environment no longer reproduces dubious ownership"
+          exit 1
+        fi
+        echo "$stderr"
+        if echo "$stderr" | grep -qE 'dubious ownership|unsafe repository'; then
+          echo "::error::git message is not translated - the locale variant would not test anything"
+          exit 1
+        fi
+    - uses: ./
+      id: filter
+      env:
+        LC_ALL: ${{ matrix.locale }}
+      with:
+        token: ''
+        filters: '.github/filters.yml'
+    - name: filter-test
+      if: steps.filter.outputs.any != 'true' || steps.filter.outputs.error == 'true'
+      run: exit 1
+
  test-wd-without-token:
    runs-on: ubuntu-latest
    steps:
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog

+## v4.0.2
+- [Work around git dubious ownership errors in container jobs](https://github.com/dorny/paths-filter/pull/317)
+- [Use rev-parse instead of branch --show-current for older git compat](https://github.com/dorny/paths-filter/pull/303)
+- [Fix warning message](https://github.com/dorny/paths-filter/pull/282)
+
+## v4.0.1
+- [Support merge queue](https://github.com/dorny/paths-filter/pull/255)
+
 ## v4.0.0
 - [Update action runtime to node24](https://github.com/dorny/paths-filter/pull/294)

--- a/README.md
+++ b/README.md
@@ -27,6 +27,11 @@ don't allow this because they don't work on a level of individual jobs or steps.
  - The `base` input parameter must not be the same as the branch that triggered the workflow
  - Changes are detected against the merge-base with the configured base branch or the default branch
  - Uses git commands to detect changes - repository must be already [checked out](https://github.com/actions/checkout)
+- **[Merge queue](https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue):**
+  - Workflow triggered by **[merge_group](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#merge_group)**
+  - The `base` and `ref` input parameters default to commit hashes from the event
+    unless explicitly specified.
+  - Uses git commands to detect changes - repository must be already [checked out](https://github.com/actions/checkout)
 - **Master, Release, or other long-lived branches:**
  - Workflow triggered by **[push](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push)** event
  when `base` input parameter is the same as the branch that triggered the workflow:
@@ -46,7 +51,7 @@ don't allow this because they don't work on a level of individual jobs or steps.
 ## Example

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
  id: changes
  with:
    filters: |
@@ -69,10 +74,15 @@ For more scenarios see [examples](#examples) section.
 - It's recommended to quote your path expressions with `'` or `"`. Otherwise, you will get an error if it starts with `*`.
 - Local execution with [act](https://github.com/nektos/act) works only with alternative runner image. Default runner doesn't have `git` binary.
  - Use: `act -P ubuntu-latest=nektos/act-environments-ubuntu:18.04`
+- Git `dubious ownership` errors in [container jobs](https://docs.github.com/en/actions/using-containerized-services/running-jobs-in-a-container) are handled automatically -
+  the action retries with a temporary `HOME` containing a `safe.directory` entry, the same technique used by [actions/checkout](https://github.com/actions/checkout).
+  Only if fetching relies on credentials stored in `HOME`-relative files (e.g. `~/.git-credentials` or `~/.netrc`),
+  mark the repository as safe yourself in a step before this action: `git config --global --add safe.directory "$GITHUB_WORKSPACE"`

 ## What's New

- New major release `v3` after update to Node 20 [Breaking change]
+- Automatic workaround for git `dubious ownership` errors in container jobs
+- New major release `v4` after update to Node 24 [Breaking change]
 - Add `ref` input parameter
 - Add `list-files: csv` format
 - Configure matrix job to run for each folder with changes using `changes` output
@@ -84,7 +94,7 @@ For more information, see [CHANGELOG](https://github.com/dorny/paths-filter/blob
 ## Usage

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
  with:
    # Defines filters applied to detected changed files.
    # Each filter has a name and a list of rules.
@@ -104,6 +114,8 @@ For more information, see [CHANGELOG](https://github.com/dorny/paths-filter/blob
    # Branch, tag, or commit SHA against which the changes will be detected.
    # If it references the same branch it was pushed to,
    # changes are detected against the most recent commit before the push.
+    # If it is empty and action is triggered by merge_group event,
+    # the base commit in the event will be used.
    # Otherwise, it uses git merge-base to find the best common ancestor between
    # current branch (HEAD) and base.
    # When merge-base is found, it's used for change detection - only changes
@@ -117,6 +129,8 @@ For more information, see [CHANGELOG](https://github.com/dorny/paths-filter/blob
    # Git reference (e.g. branch name) from which the changes will be detected.
    # Useful when workflow can be triggered only on the default branch (e.g. repository_dispatch event)
    # but you want to get changes on a different branch.
+    # If this is empty and action is triggered by merge_group event,
+    # the head commit in the event will be used.
    # This option is ignored if action is triggered by pull_request event.
    # default: ${{ github.ref }}
    ref:
@@ -154,14 +168,14 @@ For more information, see [CHANGELOG](https://github.com/dorny/paths-filter/blob
    # Default: ${{ github.token }}
    token: ''

-    # Optional parameter to override the default behavior of file matching algorithm. 
+    # Optional parameter to override the default behavior of file matching algorithm.
    # By default files that match at least one pattern defined by the filters will be included.
    # This parameter allows to override the "at least one pattern" behavior to make it so that
-    # all of the patterns have to match or otherwise the file is excluded. 
-    # An example scenario where this is useful if you would like to match all 
-    # .ts files in a sub-directory but not .md files. 
-    # The filters below will match markdown files despite the exclusion syntax UNLESS 
-    # you specify 'every' as the predicate-quantifier parameter. When you do that, 
+    # all of the patterns have to match or otherwise the file is excluded.
+    # An example scenario where this is useful if you would like to match all
+    # .ts files in a sub-directory but not .md files.
+    # The filters below will match markdown files despite the exclusion syntax UNLESS
+    # you specify 'every' as the predicate-quantifier parameter. When you do that,
    # it will only match the .ts files in the subdirectory as expected.
    #
    # backend:
@@ -192,8 +206,8 @@ jobs:
  tests:
    runs-on: ubuntu-latest
    steps:
-    - uses: actions/checkout@v4
-    - uses: dorny/paths-filter@v3
+    - uses: actions/checkout@v6
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        filters: |
@@ -237,7 +251,7 @@ jobs:
      frontend: ${{ steps.filter.outputs.frontend }}
    steps:
    # For pull requests it's not necessary to checkout the code
-    - uses: dorny/paths-filter@v3
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        filters: |
@@ -252,7 +266,7 @@ jobs:
    if: ${{ needs.changes.outputs.backend == 'true' }}
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
      - ...

  # JOB to build and test frontend code
@@ -261,7 +275,7 @@ jobs:
    if: ${{ needs.changes.outputs.frontend == 'true' }}
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
      - ...
 ```

@@ -283,7 +297,7 @@ jobs:
      packages: ${{ steps.filter.outputs.changes }}
    steps:
    # For pull requests it's not necessary to checkout the code
-    - uses: dorny/paths-filter@v3
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        filters: |
@@ -300,7 +314,7 @@ jobs:
        package: ${{ fromJSON(needs.changes.outputs.packages) }}
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
      - ...
 ```

@@ -317,6 +331,12 @@ on:
    branches: # PRs to the following branches will trigger the workflow
      - master
      - develop
+  # Optionally you can use the action in the merge queue
+  # if your repository enables the feature.
+  merge_group:
+    branches:
+      - master
+      - develop
 jobs:
  build:
    runs-on: ubuntu-latest
@@ -324,8 +344,8 @@ jobs:
    permissions:
      pull-requests: read
    steps:
-    - uses: actions/checkout@v4
-    - uses: dorny/paths-filter@v3
+    - uses: actions/checkout@v6
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        filters: ... # Configure your filters
@@ -345,12 +365,12 @@ jobs:
  build:
    runs-on: ubuntu-latest
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
      with:
        # This may save additional git fetch roundtrip if
        # merge-base is found within latest 20 commits
        fetch-depth: 20
-    - uses: dorny/paths-filter@v3
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        base: develop # Change detection against merge-base with this branch
@@ -373,8 +393,8 @@ jobs:
  build:
    runs-on: ubuntu-latest
    steps:
-    - uses: actions/checkout@v4
-    - uses: dorny/paths-filter@v3
+    - uses: actions/checkout@v6
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        # Use context to get the branch where commits were pushed.
@@ -401,14 +421,14 @@ jobs:
  build:
    runs-on: ubuntu-latest
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6

      # Some action that modifies files tracked by git (e.g. code linter)
    - uses: johndoe/some-action@v1

      # Filter to detect which files were modified
      # Changes could be, for example, automatically committed
-    - uses: dorny/paths-filter@v3
+    - uses: dorny/paths-filter@v4
      id: filter
      with:
        base: HEAD
@@ -423,7 +443,7 @@ jobs:
  <summary>Define filter rules in own file</summary>

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
      id: filter
      with:
        # Path to file where filters are defined
@@ -436,7 +456,7 @@ jobs:
  <summary>Use YAML anchors to reuse path expression(s) inside another rule</summary>

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
      id: filter
      with:
        # &shared is YAML anchor,
@@ -457,7 +477,7 @@ jobs:
  <summary>Consider if file was added, modified or deleted</summary>

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
      id: filter
      with:
        # Changed file can be 'added', 'modified', or 'deleted'.
@@ -483,7 +503,7 @@ jobs:
  <summary>Detect changes in folder only for some file extensions</summary>

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
      id: filter
      with:
        # This makes it so that all the patterns have to match a file for it to be
@@ -511,7 +531,7 @@ jobs:
  <summary>Passing list of modified files as command line args in Linux shell</summary>

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
  id: filter
  with:
    # Enable listing of files matching each filter.
@@ -537,7 +557,7 @@ jobs:
  <summary>Passing list of modified files as JSON array to another action</summary>

 ```yaml
- uses: dorny/paths-filter@v3
+- uses: dorny/paths-filter@v4
  id: filter
  with:
    # Enable listing of files matching each filter.
--- a/tests/git-exec.test.ts
+++ b/tests/git-exec.test.ts
@@ -0,0 +1,113 @@
+import {getExecOutput, ExecOutput} from '@actions/exec'
+import {gitExec} from '../src/git'
+import {ensureSafeDirectory, getGitEnv} from '../src/safe-directory'
+
+jest.mock('@actions/exec')
+jest.mock('../src/safe-directory', () => ({
+  ...jest.requireActual('../src/safe-directory'),
+  ensureSafeDirectory: jest.fn(),
+  getGitEnv: jest.fn()
+}))
+
+const getExecOutputMock = getExecOutput as jest.MockedFunction<typeof getExecOutput>
+const ensureSafeDirectoryMock = ensureSafeDirectory as jest.MockedFunction<typeof ensureSafeDirectory>
+const getGitEnvMock = getGitEnv as jest.MockedFunction<typeof getGitEnv>
+
+const SUCCESS_OUTPUT: ExecOutput = {exitCode: 0, stdout: 'ok', stderr: ''}
+const DUBIOUS_OUTPUT: ExecOutput = {
+  exitCode: 128,
+  stdout: '',
+  stderr: "fatal: detected dubious ownership in repository at '/github/workspace'"
+}
+
+// clearMocks in jest.config.js does not remove queued mockResolvedValueOnce values or implementations
+beforeEach(() => {
+  getExecOutputMock.mockReset()
+  ensureSafeDirectoryMock.mockReset()
+  getGitEnvMock.mockReset()
+})
+
+describe('gitExec', () => {
+  test('returns result of successful command without invoking the workaround', async () => {
+    getExecOutputMock.mockResolvedValueOnce(SUCCESS_OUTPUT)
+
+    const result = await gitExec(['status'])
+
+    expect(result).toBe(SUCCESS_OUTPUT)
+    expect(getExecOutputMock).toHaveBeenCalledTimes(1)
+    expect(getExecOutputMock).toHaveBeenCalledWith('git', ['status'], expect.objectContaining({ignoreReturnCode: true}))
+    expect(ensureSafeDirectoryMock).not.toHaveBeenCalled()
+  })
+
+  test('passes environment from getGitEnv to git', async () => {
+    const env = {HOME: '/temp/home'}
+    getGitEnvMock.mockReturnValue(env)
+    getExecOutputMock.mockResolvedValueOnce(SUCCESS_OUTPUT)
+
+    await gitExec(['status'])
+
+    expect(getExecOutputMock).toHaveBeenCalledWith('git', ['status'], expect.objectContaining({env}))
+  })
+
+  test('retries once after dubious ownership error is worked around', async () => {
+    getExecOutputMock.mockResolvedValueOnce(DUBIOUS_OUTPUT).mockResolvedValueOnce(SUCCESS_OUTPUT)
+    ensureSafeDirectoryMock.mockResolvedValueOnce(true)
+
+    const result = await gitExec(['status'])
+
+    expect(result).toBe(SUCCESS_OUTPUT)
+    expect(ensureSafeDirectoryMock).toHaveBeenCalledWith(DUBIOUS_OUTPUT.stderr)
+    expect(getExecOutputMock).toHaveBeenCalledTimes(2)
+    for (const call of getExecOutputMock.mock.calls) {
+      expect(call[2]).toEqual(expect.objectContaining({ignoreReturnCode: true}))
+    }
+  })
+
+  test('throws actionable error when retry still fails with dubious ownership', async () => {
+    getExecOutputMock.mockResolvedValueOnce(DUBIOUS_OUTPUT).mockResolvedValueOnce(DUBIOUS_OUTPUT)
+    ensureSafeDirectoryMock.mockResolvedValueOnce(true)
+
+    const promise = gitExec(['status'])
+
+    await expect(promise).rejects.toThrow(/detected dubious ownership/)
+    await expect(promise).rejects.toThrow(/safe\.directory/)
+    await expect(promise).rejects.toThrow(/--user/)
+    expect(getExecOutputMock).toHaveBeenCalledTimes(2)
+  })
+
+  test('throws without retry when workaround adds nothing new', async () => {
+    getExecOutputMock.mockResolvedValueOnce(DUBIOUS_OUTPUT)
+    ensureSafeDirectoryMock.mockResolvedValueOnce(false)
+
+    await expect(gitExec(['status'])).rejects.toThrow(/safe\.directory/)
+    expect(getExecOutputMock).toHaveBeenCalledTimes(1)
+  })
+
+  test('returns non-dubious failure when ignoreReturnCode is set', async () => {
+    const failure: ExecOutput = {exitCode: 1, stdout: '', stderr: 'some error'}
+    getExecOutputMock.mockResolvedValueOnce(failure)
+
+    const result = await gitExec(['show-ref', 'master'], {ignoreReturnCode: true})
+
+    expect(result).toBe(failure)
+    expect(ensureSafeDirectoryMock).not.toHaveBeenCalled()
+  })
+
+  test('retries dubious ownership error even when ignoreReturnCode is set', async () => {
+    getExecOutputMock.mockResolvedValueOnce(DUBIOUS_OUTPUT).mockResolvedValueOnce(SUCCESS_OUTPUT)
+    ensureSafeDirectoryMock.mockResolvedValueOnce(true)
+
+    const result = await gitExec(['show-ref', 'master'], {ignoreReturnCode: true})
+
+    expect(result).toBe(SUCCESS_OUTPUT)
+    expect(getExecOutputMock).toHaveBeenCalledTimes(2)
+  })
+
+  test('throws on non-dubious failure when ignoreReturnCode is not set', async () => {
+    getExecOutputMock.mockResolvedValueOnce({exitCode: 1, stdout: '', stderr: 'some error'})
+
+    await expect(gitExec(['fetch'])).rejects.toThrow("The process 'git fetch' failed with exit code 1")
+    expect(getExecOutputMock).toHaveBeenCalledTimes(1)
+    expect(ensureSafeDirectoryMock).not.toHaveBeenCalled()
+  })
+})
--- a/tests/safe-directory.test.ts
+++ b/tests/safe-directory.test.ts
@@ -0,0 +1,256 @@
+import * as fs from 'fs'
+import * as os from 'os'
+import * as path from 'path'
+import {exec} from '@actions/exec'
+import {
+  buildGitEnv,
+  cleanup,
+  createTempGitHome,
+  ensureSafeDirectory,
+  getGitEnv,
+  isDubiousOwnershipError,
+  parseRepositoryPath,
+  resolveTempBaseDir
+} from '../src/safe-directory'
+
+jest.mock('@actions/exec')
+
+const execMock = exec as jest.MockedFunction<typeof exec>
+
+const DUBIOUS_STDERR = "fatal: detected dubious ownership in repository at '/github/workspace'"
+const UNSAFE_STDERR = "fatal: unsafe repository ('/github/workspace' is owned by someone else)"
+
+describe('detection of dubious ownership errors', () => {
+  test('detects "detected dubious ownership" wording at exit code 128', () => {
+    expect(isDubiousOwnershipError(128, DUBIOUS_STDERR)).toBe(true)
+  })
+
+  test('detects older "unsafe repository" wording at exit code 128', () => {
+    expect(isDubiousOwnershipError(128, UNSAFE_STDERR)).toBe(true)
+  })
+
+  test('does not match other git errors at exit code 128', () => {
+    expect(isDubiousOwnershipError(128, 'fatal: not a git repository')).toBe(false)
+  })
+
+  test('does not match dubious ownership text at other exit codes', () => {
+    expect(isDubiousOwnershipError(1, DUBIOUS_STDERR)).toBe(false)
+    expect(isDubiousOwnershipError(0, DUBIOUS_STDERR)).toBe(false)
+  })
+
+  test('parseRepositoryPath extracts path from both wordings', () => {
+    expect(parseRepositoryPath(DUBIOUS_STDERR)).toBe('/github/workspace')
+    expect(parseRepositoryPath(UNSAFE_STDERR)).toBe('/github/workspace')
+    expect(parseRepositoryPath('fatal: not a git repository')).toBeUndefined()
+  })
+})
+
+describe('createTempGitHome', () => {
+  const scratchDirs: string[] = []
+
+  async function makeScratchDir(): Promise<string> {
+    const dir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'safe-directory-test-'))
+    scratchDirs.push(dir)
+    return dir
+  }
+
+  afterEach(async () => {
+    for (const dir of scratchDirs.splice(0)) {
+      await fs.promises.rm(dir, {recursive: true, force: true})
+    }
+  })
+
+  test('copies file referenced by GIT_CONFIG_GLOBAL and skips XDG fallback', async () => {
+    const base = await makeScratchDir()
+    const home = await makeScratchDir()
+    const configFile = path.join(home, 'custom-gitconfig')
+    await fs.promises.writeFile(configFile, 'custom')
+    await fs.promises.mkdir(path.join(home, '.config', 'git'), {recursive: true})
+    await fs.promises.writeFile(path.join(home, '.config', 'git', 'config'), 'xdg')
+
+    const tempHome = await createTempGitHome(base, {GIT_CONFIG_GLOBAL: configFile, HOME: home})
+    scratchDirs.push(tempHome)
+
+    expect(await fs.promises.readFile(path.join(tempHome, '.gitconfig'), 'utf8')).toBe('custom')
+    expect(fs.existsSync(path.join(tempHome, '.config', 'git', 'config'))).toBe(false)
+  })
+
+  test('does not throw when GIT_CONFIG_GLOBAL references missing file', async () => {
+    const base = await makeScratchDir()
+
+    const tempHome = await createTempGitHome(base, {GIT_CONFIG_GLOBAL: path.join(base, 'missing-gitconfig')})
+    scratchDirs.push(tempHome)
+
+    expect(await fs.promises.readFile(path.join(tempHome, '.gitconfig'), 'utf8')).toBe('')
+  })
+
+  test('copies $HOME/.gitconfig', async () => {
+    const base = await makeScratchDir()
+    const home = await makeScratchDir()
+    await fs.promises.writeFile(path.join(home, '.gitconfig'), 'home config')
+
+    const tempHome = await createTempGitHome(base, {HOME: home})
+    scratchDirs.push(tempHome)
+
+    expect(await fs.promises.readFile(path.join(tempHome, '.gitconfig'), 'utf8')).toBe('home config')
+  })
+
+  test('copies XDG fallback config only when XDG_CONFIG_HOME is unset', async () => {
+    const base = await makeScratchDir()
+    const home = await makeScratchDir()
+    await fs.promises.mkdir(path.join(home, '.config', 'git'), {recursive: true})
+    await fs.promises.writeFile(path.join(home, '.config', 'git', 'config'), 'xdg config')
+
+    const tempHome = await createTempGitHome(base, {HOME: home})
+    scratchDirs.push(tempHome)
+    expect(await fs.promises.readFile(path.join(tempHome, '.config', 'git', 'config'), 'utf8')).toBe('xdg config')
+
+    const tempHomeWithXdg = await createTempGitHome(base, {HOME: home, XDG_CONFIG_HOME: path.join(home, '.config')})
+    scratchDirs.push(tempHomeWithXdg)
+    expect(fs.existsSync(path.join(tempHomeWithXdg, '.config', 'git', 'config'))).toBe(false)
+  })
+
+  test('creates an empty .gitconfig even when there is no config to copy', async () => {
+    const base = await makeScratchDir()
+
+    const tempHome = await createTempGitHome(base, {})
+    scratchDirs.push(tempHome)
+
+    expect(await fs.promises.readdir(tempHome)).toEqual(['.gitconfig'])
+    expect(await fs.promises.readFile(path.join(tempHome, '.gitconfig'), 'utf8')).toBe('')
+  })
+})
+
+describe('buildGitEnv', () => {
+  test('overrides HOME and GIT_CONFIG_GLOBAL, preserves other variables, drops undefined values', () => {
+    const env = buildGitEnv('/temp/home', {
+      HOME: '/root',
+      GIT_CONFIG_GLOBAL: '/root/.gitconfig',
+      PATH: '/usr/bin',
+      UNDEFINED_VALUE: undefined
+    })
+
+    expect(env['HOME']).toBe('/temp/home')
+    expect(env['GIT_CONFIG_GLOBAL']).toBe(path.join('/temp/home', '.gitconfig'))
+    expect(env['PATH']).toBe('/usr/bin')
+    expect('UNDEFINED_VALUE' in env).toBe(false)
+  })
+
+  test('leaves GIT_CONFIG_GLOBAL unset when not present in the original environment', () => {
+    const env = buildGitEnv('/temp/home', {HOME: '/root', PATH: '/usr/bin'})
+
+    expect(env['HOME']).toBe('/temp/home')
+    expect('GIT_CONFIG_GLOBAL' in env).toBe(false)
+  })
+})
+
+describe('resolveTempBaseDir', () => {
+  test('prefers RUNNER_TEMP and falls back to os.tmpdir()', () => {
+    expect(resolveTempBaseDir({RUNNER_TEMP: '/runner/temp'})).toBe('/runner/temp')
+    expect(resolveTempBaseDir({RUNNER_TEMP: ''})).toBe(os.tmpdir())
+    expect(resolveTempBaseDir({})).toBe(os.tmpdir())
+  })
+})
+
+describe('ensureSafeDirectory', () => {
+  const envBackup = process.env
+  let runnerTemp: string
+
+  beforeEach(async () => {
+    runnerTemp = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'safe-directory-test-runner-'))
+    process.env = {...envBackup}
+    process.env['RUNNER_TEMP'] = runnerTemp
+    process.env['HOME'] = runnerTemp
+    process.env['GITHUB_WORKSPACE'] = process.cwd()
+    delete process.env['GIT_CONFIG_GLOBAL']
+    delete process.env['XDG_CONFIG_HOME']
+  })
+
+  afterEach(async () => {
+    await cleanup()
+    await fs.promises.rm(runnerTemp, {recursive: true, force: true})
+    process.env = envBackup
+  })
+
+  test('activates temporary HOME and adds reported directories on first call', async () => {
+    expect(getGitEnv()['HOME']).not.toContain('paths-filter-git-home-')
+
+    const added = await ensureSafeDirectory(DUBIOUS_STDERR)
+
+    expect(added).toBe(true)
+    expect(getGitEnv()).toEqual(
+      expect.objectContaining({
+        HOME: expect.stringContaining('paths-filter-git-home-')
+      })
+    )
+    // GIT_CONFIG_GLOBAL was not set in the original environment, so it must stay unset
+    expect(getGitEnv()).not.toHaveProperty('GIT_CONFIG_GLOBAL')
+    expect(execMock).toHaveBeenCalledWith(
+      'git',
+      ['config', '--global', '--add', 'safe.directory', '/github/workspace'],
+      expect.objectContaining({
+        env: expect.objectContaining({HOME: expect.stringContaining('paths-filter-git-home-')})
+      })
+    )
+    expect(execMock).toHaveBeenCalledWith(
+      'git',
+      ['config', '--global', '--add', 'safe.directory', process.cwd()],
+      expect.anything()
+    )
+  })
+
+  test('returns false when repeated stderr adds no new directory', async () => {
+    await ensureSafeDirectory(DUBIOUS_STDERR)
+    const callCount = execMock.mock.calls.length
+
+    const added = await ensureSafeDirectory(DUBIOUS_STDERR)
+
+    expect(added).toBe(false)
+    expect(execMock.mock.calls.length).toBe(callCount)
+  })
+
+  test('adds directory reported by a later error for a different path', async () => {
+    await ensureSafeDirectory(DUBIOUS_STDERR)
+
+    const added = await ensureSafeDirectory("fatal: detected dubious ownership in repository at '/other/repo'")
+
+    expect(added).toBe(true)
+    expect(execMock).toHaveBeenCalledWith(
+      'git',
+      ['config', '--global', '--add', 'safe.directory', '/other/repo'],
+      expect.anything()
+    )
+  })
+
+  test('cleanup removes the temporary HOME and resets state', async () => {
+    await ensureSafeDirectory(DUBIOUS_STDERR)
+    const tempHome = getGitEnv()['HOME']
+    expect(tempHome).toContain('paths-filter-git-home-')
+
+    await cleanup()
+
+    expect(getGitEnv()['HOME']).not.toContain('paths-filter-git-home-')
+    expect(fs.existsSync(tempHome)).toBe(false)
+  })
+
+  test('getGitEnv mirrors process.env and forces LC_ALL=C before activation', () => {
+    process.env['SOME_PRESERVED_VARIABLE'] = 'preserved'
+    process.env['LC_ALL'] = 'de_DE.UTF-8'
+
+    const env = getGitEnv()
+
+    expect(env['SOME_PRESERVED_VARIABLE']).toBe('preserved')
+    expect(env['HOME']).toBe(runnerTemp)
+    expect(env['LC_ALL']).toBe('C')
+  })
+
+  test('getGitEnv contains the temporary HOME and forces LC_ALL=C after activation', async () => {
+    process.env['LC_ALL'] = 'de_DE.UTF-8'
+
+    await ensureSafeDirectory(DUBIOUS_STDERR)
+
+    const env = getGitEnv()
+    expect(env['HOME']).toContain('paths-filter-git-home-')
+    expect(env['LC_ALL']).toBe('C')
+  })
+})
--- a/dist/index.js
+++ b/dist/index.js
@@ -204,17 +204,46 @@ var __importStar = (this && this.__importStar) || function (mod) {
    return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.isGitSha = exports.getShortName = exports.getCurrentRef = exports.listAllFilesAsAdded = exports.parseGitDiffOutput = exports.getChangesSinceMergeBase = exports.getChangesOnHead = exports.getChanges = exports.getChangesInLastCommit = exports.HEAD = exports.NULL_SHA = void 0;
+exports.isGitSha = exports.getShortName = exports.getCurrentRef = exports.listAllFilesAsAdded = exports.parseGitDiffOutput = exports.getChangesSinceMergeBase = exports.getChangesOnHead = exports.getChanges = exports.getChangesInLastCommit = exports.gitExec = exports.HEAD = exports.NULL_SHA = void 0;
 const exec_1 = __nccwpck_require__(1514);
 const core = __importStar(__nccwpck_require__(2186));
 const file_1 = __nccwpck_require__(4014);
+const safe_directory_1 = __nccwpck_require__(2126);
 exports.NULL_SHA = '0000000000000000000000000000000000000000';
 exports.HEAD = 'HEAD';
+async function gitExec(args, options) {
+    var _a;
+    // ignoreReturnCode is always set so exitCode and stderr stay inspectable - failures are re-thrown below
+    const execute = async () => (0, exec_1.getExecOutput)('git', args, { ...options, ignoreReturnCode: true, env: (0, safe_directory_1.getGitEnv)() });
+    let result = await execute();
+    if ((0, safe_directory_1.isDubiousOwnershipError)(result.exitCode, result.stderr)) {
+        if (await (0, safe_directory_1.ensureSafeDirectory)(result.stderr)) {
+            result = await execute();
+        }
+        if ((0, safe_directory_1.isDubiousOwnershipError)(result.exitCode, result.stderr)) {
+            const firstLine = (_a = result.stderr
+                .split(/\r?\n/)
+                .find(line => line.trim().length > 0)) === null || _a === void 0 ? void 0 : _a.trim();
+            throw new Error(`${firstLine !== null && firstLine !== void 0 ? firstLine : 'Git failed due to dubious repository ownership'}\n` +
+                'The automatic safe.directory workaround was not sufficient. ' +
+                'Either run the container with the same user as the runner:\n' +
+                '  container:\n' +
+                '    options: --user 1001\n' +
+                'or mark the repository as safe in a step before this action:\n' +
+                '  - run: git config --global --add safe.directory "$GITHUB_WORKSPACE"');
+        }
+    }
+    if (result.exitCode !== 0 && !(options === null || options === void 0 ? void 0 : options.ignoreReturnCode)) {
+        throw new Error(`The process 'git ${args.join(' ')}' failed with exit code ${result.exitCode}`);
+    }
+    return result;
+}
+exports.gitExec = gitExec;
 async function getChangesInLastCommit() {
    core.startGroup(`Change detection in last commit`);
    let output = '';
    try {
-        output = (await (0, exec_1.getExecOutput)('git', ['log', '--format=', '--no-renames', '--name-status', '-z', '-n', '1'])).stdout;
+        output = (await gitExec(['log', '--format=', '--no-renames', '--name-status', '-z', '-n', '1'])).stdout;
    }
    finally {
        fixStdOutNullTermination();
@@ -231,8 +260,7 @@ async function getChanges(base, head) {
    let output = '';
    try {
        // Two dots '..' change detection - directly compares two versions
-        output = (await (0, exec_1.getExecOutput)('git', ['diff', '--no-renames', '--name-status', '-z', `${baseRef}..${headRef}`]))
-            .stdout;
+        output = (await gitExec(['diff', '--no-renames', '--name-status', '-z', `${baseRef}..${headRef}`])).stdout;
    }
    finally {
        fixStdOutNullTermination();
@@ -246,7 +274,7 @@ async function getChangesOnHead() {
    core.startGroup(`Change detection on HEAD`);
    let output = '';
    try {
-        output = (await (0, exec_1.getExecOutput)('git', ['diff', '--no-renames', '--name-status', '-z', 'HEAD'])).stdout;
+        output = (await gitExec(['diff', '--no-renames', '--name-status', '-z', 'HEAD'])).stdout;
    }
    finally {
        fixStdOutNullTermination();
@@ -262,7 +290,7 @@ async function getChangesSinceMergeBase(base, head, initialFetchDepth) {
        if (baseRef === undefined || headRef === undefined) {
            return false;
        }
-        return (await (0, exec_1.getExecOutput)('git', ['merge-base', baseRef, headRef], { ignoreReturnCode: true })).exitCode === 0;
+        return (await gitExec(['merge-base', baseRef, headRef], { ignoreReturnCode: true })).exitCode === 0;
    }
    let noMergeBase = false;
    core.startGroup(`Searching for merge-base ${base}...${head}`);
@@ -270,12 +298,12 @@ async function getChangesSinceMergeBase(base, head, initialFetchDepth) {
        baseRef = await getLocalRef(base);
        headRef = await getLocalRef(head);
        if (!(await hasMergeBase())) {
-            await (0, exec_1.getExecOutput)('git', ['fetch', '--no-tags', `--depth=${initialFetchDepth}`, 'origin', base, head]);
+            await gitExec(['fetch', '--no-tags', `--depth=${initialFetchDepth}`, 'origin', base, head]);
            if (baseRef === undefined || headRef === undefined) {
                baseRef = baseRef !== null && baseRef !== void 0 ? baseRef : (await getLocalRef(base));
                headRef = headRef !== null && headRef !== void 0 ? headRef : (await getLocalRef(head));
                if (baseRef === undefined || headRef === undefined) {
-                    await (0, exec_1.getExecOutput)('git', ['fetch', '--tags', '--depth=1', 'origin', base, head], {
+                    await gitExec(['fetch', '--tags', '--depth=1', 'origin', base, head], {
                        ignoreReturnCode: true // returns exit code 1 if tags on remote were updated - we can safely ignore it
                    });
                    baseRef = baseRef !== null && baseRef !== void 0 ? baseRef : (await getLocalRef(base));
@@ -292,12 +320,12 @@ async function getChangesSinceMergeBase(base, head, initialFetchDepth) {
            let lastCommitCount = await getCommitCount();
            while (!(await hasMergeBase())) {
                depth = Math.min(depth * 2, Number.MAX_SAFE_INTEGER);
-                await (0, exec_1.getExecOutput)('git', ['fetch', `--deepen=${depth}`, 'origin', base, head]);
+                await gitExec(['fetch', `--deepen=${depth}`, 'origin', base, head]);
                const commitCount = await getCommitCount();
                if (commitCount === lastCommitCount) {
                    core.info('No more commits were fetched');
                    core.info('Last attempt will be to fetch full history');
-                    await (0, exec_1.getExecOutput)('git', ['fetch']);
+                    await gitExec(['fetch']);
                    if (!(await hasMergeBase())) {
                        noMergeBase = true;
                    }
@@ -320,7 +348,7 @@ async function getChangesSinceMergeBase(base, head, initialFetchDepth) {
    core.startGroup(`Change detection ${diffArg}`);
    let output = '';
    try {
-        output = (await (0, exec_1.getExecOutput)('git', ['diff', '--no-renames', '--name-status', '-z', diffArg])).stdout;
+        output = (await gitExec(['diff', '--no-renames', '--name-status', '-z', diffArg])).stdout;
    }
    finally {
        fixStdOutNullTermination();
@@ -345,7 +373,7 @@ async function listAllFilesAsAdded() {
    core.startGroup('Listing all files tracked by git');
    let output = '';
    try {
-        output = (await (0, exec_1.getExecOutput)('git', ['ls-files', '-z'])).stdout;
+        output = (await gitExec(['ls-files', '-z'])).stdout;
    }
    finally {
        fixStdOutNullTermination();
@@ -363,15 +391,15 @@ exports.listAllFilesAsAdded = listAllFilesAsAdded;
 async function getCurrentRef() {
    core.startGroup(`Get current git ref`);
    try {
-        const branch = (await (0, exec_1.getExecOutput)('git', ['branch', '--show-current'])).stdout.trim();
-        if (branch) {
+        const branch = (await gitExec(['rev-parse', '--abbrev-ref', 'HEAD'])).stdout.trim();
+        if (branch && branch !== 'HEAD') {
            return branch;
        }
-        const describe = await (0, exec_1.getExecOutput)('git', ['describe', '--tags', '--exact-match'], { ignoreReturnCode: true });
+        const describe = await gitExec(['describe', '--tags', '--exact-match'], { ignoreReturnCode: true });
        if (describe.exitCode === 0) {
            return describe.stdout.trim();
        }
-        return (await (0, exec_1.getExecOutput)('git', ['rev-parse', exports.HEAD])).stdout.trim();
+        return (await gitExec(['rev-parse', exports.HEAD])).stdout.trim();
    }
    finally {
        core.endGroup();
@@ -395,10 +423,10 @@ function isGitSha(ref) {
 }
 exports.isGitSha = isGitSha;
 async function hasCommit(ref) {
-    return (await (0, exec_1.getExecOutput)('git', ['cat-file', '-e', `${ref}^{commit}`], { ignoreReturnCode: true })).exitCode === 0;
+    return (await gitExec(['cat-file', '-e', `${ref}^{commit}`], { ignoreReturnCode: true })).exitCode === 0;
 }
 async function getCommitCount() {
-    const output = (await (0, exec_1.getExecOutput)('git', ['rev-list', '--count', '--all'])).stdout;
+    const output = (await gitExec(['rev-list', '--count', '--all'])).stdout;
    const count = parseInt(output);
    return isNaN(count) ? 0 : count;
 }
@@ -406,7 +434,7 @@ async function getLocalRef(shortName) {
    if (isGitSha(shortName)) {
        return (await hasCommit(shortName)) ? shortName : undefined;
    }
-    const output = (await (0, exec_1.getExecOutput)('git', ['show-ref', shortName], { ignoreReturnCode: true })).stdout;
+    const output = (await gitExec(['show-ref', shortName], { ignoreReturnCode: true })).stdout;
    const refs = output
        .split(/\r?\n/g)
        .map(l => l.match(/refs\/(?:(?:heads)|(?:tags)|(?:remotes\/origin))\/(.*)$/))
@@ -426,10 +454,10 @@ async function ensureRefAvailable(name) {
    try {
        let ref = await getLocalRef(name);
        if (ref === undefined) {
-            await (0, exec_1.getExecOutput)('git', ['fetch', '--depth=1', '--no-tags', 'origin', name]);
+            await gitExec(['fetch', '--depth=1', '--no-tags', 'origin', name]);
            ref = await getLocalRef(name);
            if (ref === undefined) {
-                await (0, exec_1.getExecOutput)('git', ['fetch', '--depth=1', '--tags', 'origin', name]);
+                await gitExec(['fetch', '--depth=1', '--tags', 'origin', name]);
                ref = await getLocalRef(name);
                if (ref === undefined) {
                    throw new Error(`Could not determine what is ${name} - fetch works but it's not a branch, tag or commit SHA`);
@@ -559,6 +587,7 @@ const github = __importStar(__nccwpck_require__(5438));
 const filter_1 = __nccwpck_require__(3707);
 const file_1 = __nccwpck_require__(4014);
 const git = __importStar(__nccwpck_require__(3374));
+const safe_directory_1 = __nccwpck_require__(2126);
 const shell_escape_1 = __nccwpck_require__(4613);
 const csv_escape_1 = __nccwpck_require__(7402);
 async function run() {
@@ -594,6 +623,9 @@ async function run() {
    catch (error) {
        core.setFailed(getErrorMessage(error));
    }
+    finally {
+        await (0, safe_directory_1.cleanup)();
+    }
 }
 function isPathInput(text) {
    return !(text.includes('\n') || text.includes(':'));
@@ -617,33 +649,49 @@ async function getChangedFiles(token, base, ref, initialFetchDepth) {
        }
        return await git.getChangesOnHead();
    }
-    const prEvents = ['pull_request', 'pull_request_review', 'pull_request_review_comment', 'pull_request_target'];
-    if (prEvents.includes(github.context.eventName)) {
-        if (ref) {
-            core.warning(`'ref' input parameter is ignored when 'base' is set to HEAD`);
+    switch (github.context.eventName) {
+        // To keep backward compatibility, commits in GitHub pull request event
+        // take precedence over manual inputs.
+        case 'pull_request':
+        case 'pull_request_review':
+        case 'pull_request_review_comment':
+        case 'pull_request_target': {
+            if (ref) {
+                core.warning(`'ref' input parameter is ignored when action is triggered by pull request event`);
+            }
+            if (base) {
+                core.warning(`'base' input parameter is ignored when action is triggered by pull request event`);
+            }
+            const pr = github.context.payload.pull_request;
+            if (token) {
+                return await getChangedFilesFromApi(token, pr);
+            }
+            if (github.context.eventName === 'pull_request_target') {
+                // pull_request_target is executed in context of base branch and GITHUB_SHA points to last commit in base branch
+                // Therefore it's not possible to look at changes in last commit
+                // At the same time we don't want to fetch any code from forked repository
+                throw new Error(`'token' input parameter is required if action is triggered by 'pull_request_target' event`);
+            }
+            core.info('GitHub token is not available - changes will be detected using git diff');
+            const baseSha = (_a = github.context.payload.pull_request) === null || _a === void 0 ? void 0 : _a.base.sha;
+            const defaultBranch = (_b = github.context.payload.repository) === null || _b === void 0 ? void 0 : _b.default_branch;
+            const currentRef = await git.getCurrentRef();
+            return await git.getChanges(base || baseSha || defaultBranch, currentRef);
        }
-        if (base) {
-            core.warning(`'base' input parameter is ignored when action is triggered by pull request event`);
+        // To keep backward compatibility, manual inputs take precedence over
+        // commits in GitHub merge queue event.
+        case 'merge_group': {
+            const mergeGroup = github.context.payload;
+            if (!base) {
+                base = mergeGroup.merge_group.base_sha;
+            }
+            if (!ref) {
+                ref = mergeGroup.merge_group.head_sha;
+            }
+            break;
        }
-        const pr = github.context.payload.pull_request;
-        if (token) {
-            return await getChangedFilesFromApi(token, pr);
-        }
-        if (github.context.eventName === 'pull_request_target') {
-            // pull_request_target is executed in context of base branch and GITHUB_SHA points to last commit in base branch
-            // Therefor it's not possible to look at changes in last commit
-            // At the same time we don't want to fetch any code from forked repository
-            throw new Error(`'token' input parameter is required if action is triggered by 'pull_request_target' event`);
-        }
-        core.info('Github token is not available - changes will be detected using git diff');
-        const baseSha = (_a = github.context.payload.pull_request) === null || _a === void 0 ? void 0 : _a.base.sha;
-        const defaultBranch = (_b = github.context.payload.repository) === null || _b === void 0 ? void 0 : _b.default_branch;
-        const currentRef = await git.getCurrentRef();
-        return await git.getChanges(base || baseSha || defaultBranch, currentRef);
-    }
-    else {
-        return getChangedFilesFromGit(base, ref, initialFetchDepth);
    }
+    return getChangedFilesFromGit(base, ref, initialFetchDepth);
 }
 async function getChangedFilesFromGit(base, head, initialFetchDepth) {
    var _a;
@@ -694,7 +742,7 @@ async function getChangedFilesFromGit(base, head, initialFetchDepth) {
 }
 // Uses github REST api to get list of files changed in PR
 async function getChangedFilesFromApi(token, pullRequest) {
-    core.startGroup(`Fetching list of changed files for PR#${pullRequest.number} from Github API`);
+    core.startGroup(`Fetching list of changed files for PR#${pullRequest.number} from GitHub API`);
    try {
        const client = github.getOctokit(token);
        const per_page = 100;
@@ -801,6 +849,164 @@ function getErrorMessage(error) {
 run();


+/***/ }),
+
+/***/ 2126:
+/***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
+
+"use strict";
+
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.resolveTempBaseDir = exports.buildGitEnv = exports.createTempGitHome = exports.cleanup = exports.ensureSafeDirectory = exports.getGitEnv = exports.parseRepositoryPath = exports.isDubiousOwnershipError = void 0;
+const fs = __importStar(__nccwpck_require__(7147));
+const os = __importStar(__nccwpck_require__(2037));
+const path = __importStar(__nccwpck_require__(1017));
+const core = __importStar(__nccwpck_require__(2186));
+const exec_1 = __nccwpck_require__(1514);
+// Git >= 2.35.2 and distro backports of CVE-2022-24765 fail with exit code 128 when
+// the repository is owned by a different user - typical for container jobs where the
+// workspace is bind-mounted from the host. Older backports use the "unsafe repository" wording.
+const DUBIOUS_OWNERSHIP_PATTERN = /detected dubious ownership|unsafe repository/;
+const REPOSITORY_PATH_PATTERN = /(?:repository at|unsafe repository \()\s*'([^']+)'/;
+let tempHomeDir;
+let gitEnv;
+const safeDirectories = new Set();
+function isDubiousOwnershipError(exitCode, stderr) {
+    return exitCode === 128 && DUBIOUS_OWNERSHIP_PATTERN.test(stderr);
+}
+exports.isDubiousOwnershipError = isDubiousOwnershipError;
+function parseRepositoryPath(stderr) {
+    var _a;
+    return (_a = stderr.match(REPOSITORY_PATH_PATTERN)) === null || _a === void 0 ? void 0 : _a[1];
+}
+exports.parseRepositoryPath = parseRepositoryPath;
+// Until the workaround is activated this mirrors process.env; afterwards it applies the
+// temporary HOME redirect. In both cases LC_ALL=C is forced so git emits untranslated
+// messages and isDubiousOwnershipError / parseRepositoryPath match regardless of the
+// container's locale.
+function getGitEnv() {
+    return { ...(gitEnv !== null && gitEnv !== void 0 ? gitEnv : cloneDefinedEnv(process.env)), LC_ALL: 'C' };
+}
+exports.getGitEnv = getGitEnv;
+// Marks directories reported by git as safe, using a temporary HOME so no configuration
+// outside this action is modified - same technique as actions/checkout.
+// Returns false if there was no new directory to add.
+async function ensureSafeDirectory(stderr) {
+    if (tempHomeDir === undefined) {
+        tempHomeDir = await createTempGitHome(resolveTempBaseDir(process.env), process.env);
+        gitEnv = buildGitEnv(tempHomeDir, process.env);
+        core.info('Git reported dubious ownership of the repository - this is typical for container jobs ' +
+            'where the workspace is owned by a different user. A temporary HOME with a copy of the global ' +
+            'git config and a safe.directory exception will be used for git commands executed by this action.');
+    }
+    let added = false;
+    for (const dir of [parseRepositoryPath(stderr), process.env.GITHUB_WORKSPACE, process.cwd()]) {
+        if (dir && !safeDirectories.has(dir)) {
+            await (0, exec_1.exec)('git', ['config', '--global', '--add', 'safe.directory', dir], { env: getGitEnv() });
+            safeDirectories.add(dir);
+            added = true;
+        }
+    }
+    return added;
+}
+exports.ensureSafeDirectory = ensureSafeDirectory;
+async function cleanup() {
+    if (tempHomeDir !== undefined) {
+        try {
+            await fs.promises.rm(tempHomeDir, { recursive: true, force: true });
+        }
+        catch (error) {
+            // Cleanup failure is not fatal - RUNNER_TEMP is wiped when the job ends
+        }
+    }
+    tempHomeDir = undefined;
+    gitEnv = undefined;
+    safeDirectories.clear();
+}
+exports.cleanup = cleanup;
+// Exported for tests
+async function createTempGitHome(baseTempDir, env) {
+    const tempHome = await fs.promises.mkdtemp(path.join(baseTempDir, 'paths-filter-git-home-'));
+    const tempConfigPath = path.join(tempHome, '.gitconfig');
+    // The file must exist even when there is no config to copy - when $HOME/.gitconfig is missing,
+    // `git config --global` writes to an existing $XDG_CONFIG_HOME/git/config instead
+    await fs.promises.writeFile(tempConfigPath, '');
+    if (env.GIT_CONFIG_GLOBAL) {
+        await copyFileIfExists(env.GIT_CONFIG_GLOBAL, tempConfigPath);
+    }
+    else if (env.HOME) {
+        await copyFileIfExists(path.join(env.HOME, '.gitconfig'), tempConfigPath);
+        if (!env.XDG_CONFIG_HOME) {
+            // When XDG_CONFIG_HOME is unset, git falls back to $HOME/.config/git/config,
+            // which would become unreadable under the new HOME
+            await copyFileIfExists(path.join(env.HOME, '.config', 'git', 'config'), path.join(tempHome, '.config', 'git', 'config'));
+        }
+    }
+    return tempHome;
+}
+exports.createTempGitHome = createTempGitHome;
+// Exported for tests
+function buildGitEnv(tempHome, env) {
+    const newEnv = cloneDefinedEnv(env);
+    // A changed HOME redirects git of any version to the temp config. GIT_CONFIG_GLOBAL is redirected
+    // only when already set - on git >= 2.32 it replaces both global config files, so setting it
+    // unconditionally would hide an existing $XDG_CONFIG_HOME/git/config from git
+    newEnv['HOME'] = tempHome;
+    if (env.GIT_CONFIG_GLOBAL) {
+        newEnv['GIT_CONFIG_GLOBAL'] = path.join(tempHome, '.gitconfig');
+    }
+    return newEnv;
+}
+exports.buildGitEnv = buildGitEnv;
+// Exported for tests
+function resolveTempBaseDir(env) {
+    return env.RUNNER_TEMP || os.tmpdir();
+}
+exports.resolveTempBaseDir = resolveTempBaseDir;
+function cloneDefinedEnv(env) {
+    const newEnv = {};
+    for (const [key, value] of Object.entries(env)) {
+        if (value !== undefined) {
+            newEnv[key] = value;
+        }
+    }
+    return newEnv;
+}
+async function copyFileIfExists(source, destination) {
+    try {
+        await fs.promises.access(source, fs.constants.R_OK);
+    }
+    catch (error) {
+        return;
+    }
+    await fs.promises.mkdir(path.dirname(destination), { recursive: true });
+    await fs.promises.copyFile(source, destination);
+}
+
+
 /***/ }),

 /***/ 7351:
--- a/src/git.ts
+++ b/src/git.ts
@@ -1,15 +1,50 @@
-import {getExecOutput} from '@actions/exec'
+import {getExecOutput, ExecOutput} from '@actions/exec'
 import * as core from '@actions/core'
 import {File, ChangeStatus} from './file'
+import {ensureSafeDirectory, getGitEnv, isDubiousOwnershipError} from './safe-directory'

 export const NULL_SHA = '0000000000000000000000000000000000000000'
 export const HEAD = 'HEAD'

+export async function gitExec(args: string[], options?: {ignoreReturnCode?: boolean}): Promise<ExecOutput> {
+  // ignoreReturnCode is always set so exitCode and stderr stay inspectable - failures are re-thrown below
+  const execute = async (): Promise<ExecOutput> =>
+    getExecOutput('git', args, {...options, ignoreReturnCode: true, env: getGitEnv()})
+
+  let result = await execute()
+  if (isDubiousOwnershipError(result.exitCode, result.stderr)) {
+    if (await ensureSafeDirectory(result.stderr)) {
+      result = await execute()
+    }
+    if (isDubiousOwnershipError(result.exitCode, result.stderr)) {
+      const firstLine = result.stderr
+        .split(/\r?\n/)
+        .find(line => line.trim().length > 0)
+        ?.trim()
+      throw new Error(
+        `${firstLine ?? 'Git failed due to dubious repository ownership'}\n` +
+          'The automatic safe.directory workaround was not sufficient. ' +
+          'Either run the container with the same user as the runner:\n' +
+          '  container:\n' +
+          '    options: --user 1001\n' +
+          'or mark the repository as safe in a step before this action:\n' +
+          '  - run: git config --global --add safe.directory "$GITHUB_WORKSPACE"'
+      )
+    }
+  }
+
+  if (result.exitCode !== 0 && !options?.ignoreReturnCode) {
+    throw new Error(`The process 'git ${args.join(' ')}' failed with exit code ${result.exitCode}`)
+  }
+
+  return result
+}
+
 export async function getChangesInLastCommit(): Promise<File[]> {
  core.startGroup(`Change detection in last commit`)
  let output = ''
  try {
-    output = (await getExecOutput('git', ['log', '--format=', '--no-renames', '--name-status', '-z', '-n', '1'])).stdout
+    output = (await gitExec(['log', '--format=', '--no-renames', '--name-status', '-z', '-n', '1'])).stdout
  } finally {
    fixStdOutNullTermination()
    core.endGroup()
@@ -27,8 +62,7 @@ export async function getChanges(base: string, head: string): Promise<File[]> {
  let output = ''
  try {
    // Two dots '..' change detection - directly compares two versions
-    output = (await getExecOutput('git', ['diff', '--no-renames', '--name-status', '-z', `${baseRef}..${headRef}`]))
-      .stdout
+    output = (await gitExec(['diff', '--no-renames', '--name-status', '-z', `${baseRef}..${headRef}`])).stdout
  } finally {
    fixStdOutNullTermination()
    core.endGroup()
@@ -42,7 +76,7 @@ export async function getChangesOnHead(): Promise<File[]> {
  core.startGroup(`Change detection on HEAD`)
  let output = ''
  try {
-    output = (await getExecOutput('git', ['diff', '--no-renames', '--name-status', '-z', 'HEAD'])).stdout
+    output = (await gitExec(['diff', '--no-renames', '--name-status', '-z', 'HEAD'])).stdout
  } finally {
    fixStdOutNullTermination()
    core.endGroup()
@@ -58,7 +92,7 @@ export async function getChangesSinceMergeBase(base: string, head: string, initi
    if (baseRef === undefined || headRef === undefined) {
      return false
    }
-    return (await getExecOutput('git', ['merge-base', baseRef, headRef], {ignoreReturnCode: true})).exitCode === 0
+    return (await gitExec(['merge-base', baseRef, headRef], {ignoreReturnCode: true})).exitCode === 0
  }

  let noMergeBase = false
@@ -67,12 +101,12 @@ export async function getChangesSinceMergeBase(base: string, head: string, initi
    baseRef = await getLocalRef(base)
    headRef = await getLocalRef(head)
    if (!(await hasMergeBase())) {
-      await getExecOutput('git', ['fetch', '--no-tags', `--depth=${initialFetchDepth}`, 'origin', base, head])
+      await gitExec(['fetch', '--no-tags', `--depth=${initialFetchDepth}`, 'origin', base, head])
      if (baseRef === undefined || headRef === undefined) {
        baseRef = baseRef ?? (await getLocalRef(base))
        headRef = headRef ?? (await getLocalRef(head))
        if (baseRef === undefined || headRef === undefined) {
-          await getExecOutput('git', ['fetch', '--tags', '--depth=1', 'origin', base, head], {
+          await gitExec(['fetch', '--tags', '--depth=1', 'origin', base, head], {
            ignoreReturnCode: true // returns exit code 1 if tags on remote were updated - we can safely ignore it
          })
          baseRef = baseRef ?? (await getLocalRef(base))
@@ -94,12 +128,12 @@ export async function getChangesSinceMergeBase(base: string, head: string, initi
      let lastCommitCount = await getCommitCount()
      while (!(await hasMergeBase())) {
        depth = Math.min(depth * 2, Number.MAX_SAFE_INTEGER)
-        await getExecOutput('git', ['fetch', `--deepen=${depth}`, 'origin', base, head])
+        await gitExec(['fetch', `--deepen=${depth}`, 'origin', base, head])
        const commitCount = await getCommitCount()
        if (commitCount === lastCommitCount) {
          core.info('No more commits were fetched')
          core.info('Last attempt will be to fetch full history')
-          await getExecOutput('git', ['fetch'])
+          await gitExec(['fetch'])
          if (!(await hasMergeBase())) {
            noMergeBase = true
          }
@@ -123,7 +157,7 @@ export async function getChangesSinceMergeBase(base: string, head: string, initi
  core.startGroup(`Change detection ${diffArg}`)
  let output = ''
  try {
-    output = (await getExecOutput('git', ['diff', '--no-renames', '--name-status', '-z', diffArg])).stdout
+    output = (await gitExec(['diff', '--no-renames', '--name-status', '-z', diffArg])).stdout
  } finally {
    fixStdOutNullTermination()
    core.endGroup()
@@ -148,7 +182,7 @@ export async function listAllFilesAsAdded(): Promise<File[]> {
  core.startGroup('Listing all files tracked by git')
  let output = ''
  try {
-    output = (await getExecOutput('git', ['ls-files', '-z'])).stdout
+    output = (await gitExec(['ls-files', '-z'])).stdout
  } finally {
    fixStdOutNullTermination()
    core.endGroup()
@@ -166,17 +200,17 @@ export async function listAllFilesAsAdded(): Promise<File[]> {
 export async function getCurrentRef(): Promise<string> {
  core.startGroup(`Get current git ref`)
  try {
-    const branch = (await getExecOutput('git', ['branch', '--show-current'])).stdout.trim()
-    if (branch) {
+    const branch = (await gitExec(['rev-parse', '--abbrev-ref', 'HEAD'])).stdout.trim()
+    if (branch && branch !== 'HEAD') {
      return branch
    }

-    const describe = await getExecOutput('git', ['describe', '--tags', '--exact-match'], {ignoreReturnCode: true})
+    const describe = await gitExec(['describe', '--tags', '--exact-match'], {ignoreReturnCode: true})
    if (describe.exitCode === 0) {
      return describe.stdout.trim()
    }

-    return (await getExecOutput('git', ['rev-parse', HEAD])).stdout.trim()
+    return (await gitExec(['rev-parse', HEAD])).stdout.trim()
  } finally {
    core.endGroup()
  }
@@ -199,11 +233,11 @@ export function isGitSha(ref: string): boolean {
 }

 async function hasCommit(ref: string): Promise<boolean> {
-  return (await getExecOutput('git', ['cat-file', '-e', `${ref}^{commit}`], {ignoreReturnCode: true})).exitCode === 0
+  return (await gitExec(['cat-file', '-e', `${ref}^{commit}`], {ignoreReturnCode: true})).exitCode === 0
 }

 async function getCommitCount(): Promise<number> {
-  const output = (await getExecOutput('git', ['rev-list', '--count', '--all'])).stdout
+  const output = (await gitExec(['rev-list', '--count', '--all'])).stdout
  const count = parseInt(output)
  return isNaN(count) ? 0 : count
 }
@@ -213,7 +247,7 @@ async function getLocalRef(shortName: string): Promise<string | undefined> {
    return (await hasCommit(shortName)) ? shortName : undefined
  }

-  const output = (await getExecOutput('git', ['show-ref', shortName], {ignoreReturnCode: true})).stdout
+  const output = (await gitExec(['show-ref', shortName], {ignoreReturnCode: true})).stdout
  const refs = output
    .split(/\r?\n/g)
    .map(l => l.match(/refs\/(?:(?:heads)|(?:tags)|(?:remotes\/origin))\/(.*)$/))
@@ -237,10 +271,10 @@ async function ensureRefAvailable(name: string): Promise<string> {
  try {
    let ref = await getLocalRef(name)
    if (ref === undefined) {
-      await getExecOutput('git', ['fetch', '--depth=1', '--no-tags', 'origin', name])
+      await gitExec(['fetch', '--depth=1', '--no-tags', 'origin', name])
      ref = await getLocalRef(name)
      if (ref === undefined) {
-        await getExecOutput('git', ['fetch', '--depth=1', '--tags', 'origin', name])
+        await gitExec(['fetch', '--depth=1', '--tags', 'origin', name])
        ref = await getLocalRef(name)
        if (ref === undefined) {
          throw new Error(`Could not determine what is ${name} - fetch works but it's not a branch, tag or commit SHA`)
--- a/src/main.ts
+++ b/src/main.ts
@@ -2,7 +2,7 @@ import * as fs from 'fs'
 import * as core from '@actions/core'
 import * as github from '@actions/github'
 import {GetResponseDataTypeFromEndpointMethod} from '@octokit/types'
-import {PushEvent, PullRequestEvent} from '@octokit/webhooks-types'
+import {MergeGroupEvent, PullRequest, PushEvent} from '@octokit/webhooks-types'

 import {
  isPredicateQuantifier,
@@ -14,6 +14,7 @@ import {
 } from './filter'
 import {File, ChangeStatus} from './file'
 import * as git from './git'
+import {cleanup as cleanupSafeDirectory} from './safe-directory'
 import {backslashEscape, shellEscape} from './list-format/shell-escape'
 import {csvEscape} from './list-format/csv-escape'

@@ -55,6 +56,8 @@ async function run(): Promise<void> {
    exportResults(results, listFiles)
  } catch (error) {
    core.setFailed(getErrorMessage(error))
+  } finally {
+    await cleanupSafeDirectory()
  }
 }

@@ -84,32 +87,50 @@ async function getChangedFiles(token: string, base: string, ref: string, initial
    return await git.getChangesOnHead()
  }

-  const prEvents = ['pull_request', 'pull_request_review', 'pull_request_review_comment', 'pull_request_target']
-  if (prEvents.includes(github.context.eventName)) {
-    if (ref) {
-      core.warning(`'ref' input parameter is ignored when 'base' is set to HEAD`)
+  switch (github.context.eventName) {
+    // To keep backward compatibility, commits in GitHub pull request event
+    // take precedence over manual inputs.
+    case 'pull_request':
+    case 'pull_request_review':
+    case 'pull_request_review_comment':
+    case 'pull_request_target': {
+      if (ref) {
+        core.warning(`'ref' input parameter is ignored when action is triggered by pull request event`)
+      }
+      if (base) {
+        core.warning(`'base' input parameter is ignored when action is triggered by pull request event`)
+      }
+      const pr = github.context.payload.pull_request as PullRequest
+      if (token) {
+        return await getChangedFilesFromApi(token, pr)
+      }
+      if (github.context.eventName === 'pull_request_target') {
+        // pull_request_target is executed in context of base branch and GITHUB_SHA points to last commit in base branch
+        // Therefore it's not possible to look at changes in last commit
+        // At the same time we don't want to fetch any code from forked repository
+        throw new Error(`'token' input parameter is required if action is triggered by 'pull_request_target' event`)
+      }
+      core.info('GitHub token is not available - changes will be detected using git diff')
+      const baseSha = github.context.payload.pull_request?.base.sha
+      const defaultBranch = github.context.payload.repository?.default_branch
+      const currentRef = await git.getCurrentRef()
+      return await git.getChanges(base || baseSha || defaultBranch, currentRef)
    }
-    if (base) {
-      core.warning(`'base' input parameter is ignored when action is triggered by pull request event`)
+    // To keep backward compatibility, manual inputs take precedence over
+    // commits in GitHub merge queue event.
+    case 'merge_group': {
+      const mergeGroup = github.context.payload as MergeGroupEvent
+      if (!base) {
+        base = mergeGroup.merge_group.base_sha
+      }
+      if (!ref) {
+        ref = mergeGroup.merge_group.head_sha
+      }
+      break
    }
-    const pr = github.context.payload.pull_request as PullRequestEvent
-    if (token) {
-      return await getChangedFilesFromApi(token, pr)
-    }
-    if (github.context.eventName === 'pull_request_target') {
-      // pull_request_target is executed in context of base branch and GITHUB_SHA points to last commit in base branch
-      // Therefor it's not possible to look at changes in last commit
-      // At the same time we don't want to fetch any code from forked repository
-      throw new Error(`'token' input parameter is required if action is triggered by 'pull_request_target' event`)
-    }
-    core.info('Github token is not available - changes will be detected using git diff')
-    const baseSha = github.context.payload.pull_request?.base.sha
-    const defaultBranch = github.context.payload.repository?.default_branch
-    const currentRef = await git.getCurrentRef()
-    return await git.getChanges(base || baseSha || defaultBranch, currentRef)
-  } else {
-    return getChangedFilesFromGit(base, ref, initialFetchDepth)
  }
+
+  return getChangedFilesFromGit(base, ref, initialFetchDepth)
 }

 async function getChangedFilesFromGit(base: string, head: string, initialFetchDepth: number): Promise<File[]> {
@@ -175,8 +196,8 @@ async function getChangedFilesFromGit(base: string, head: string, initialFetchDe
 }

 // Uses github REST api to get list of files changed in PR
-async function getChangedFilesFromApi(token: string, pullRequest: PullRequestEvent): Promise<File[]> {
-  core.startGroup(`Fetching list of changed files for PR#${pullRequest.number} from Github API`)
+async function getChangedFilesFromApi(token: string, pullRequest: PullRequest): Promise<File[]> {
+  core.startGroup(`Fetching list of changed files for PR#${pullRequest.number} from GitHub API`)
  try {
    const client = github.getOctokit(token)
    const per_page = 100
--- a/src/safe-directory.ts
+++ b/src/safe-directory.ts
@@ -0,0 +1,135 @@
+import * as fs from 'fs'
+import * as os from 'os'
+import * as path from 'path'
+import * as core from '@actions/core'
+import {exec} from '@actions/exec'
+
+// Git >= 2.35.2 and distro backports of CVE-2022-24765 fail with exit code 128 when
+// the repository is owned by a different user - typical for container jobs where the
+// workspace is bind-mounted from the host. Older backports use the "unsafe repository" wording.
+const DUBIOUS_OWNERSHIP_PATTERN = /detected dubious ownership|unsafe repository/
+const REPOSITORY_PATH_PATTERN = /(?:repository at|unsafe repository \()\s*'([^']+)'/
+
+let tempHomeDir: string | undefined
+let gitEnv: {[key: string]: string} | undefined
+const safeDirectories = new Set<string>()
+
+export function isDubiousOwnershipError(exitCode: number, stderr: string): boolean {
+  return exitCode === 128 && DUBIOUS_OWNERSHIP_PATTERN.test(stderr)
+}
+
+export function parseRepositoryPath(stderr: string): string | undefined {
+  return stderr.match(REPOSITORY_PATH_PATTERN)?.[1]
+}
+
+// Until the workaround is activated this mirrors process.env; afterwards it applies the
+// temporary HOME redirect. In both cases LC_ALL=C is forced so git emits untranslated
+// messages and isDubiousOwnershipError / parseRepositoryPath match regardless of the
+// container's locale.
+export function getGitEnv(): {[key: string]: string} {
+  return {...(gitEnv ?? cloneDefinedEnv(process.env)), LC_ALL: 'C'}
+}
+
+// Marks directories reported by git as safe, using a temporary HOME so no configuration
+// outside this action is modified - same technique as actions/checkout.
+// Returns false if there was no new directory to add.
+export async function ensureSafeDirectory(stderr: string): Promise<boolean> {
+  if (tempHomeDir === undefined) {
+    tempHomeDir = await createTempGitHome(resolveTempBaseDir(process.env), process.env)
+    gitEnv = buildGitEnv(tempHomeDir, process.env)
+    core.info(
+      'Git reported dubious ownership of the repository - this is typical for container jobs ' +
+        'where the workspace is owned by a different user. A temporary HOME with a copy of the global ' +
+        'git config and a safe.directory exception will be used for git commands executed by this action.'
+    )
+  }
+
+  let added = false
+  for (const dir of [parseRepositoryPath(stderr), process.env.GITHUB_WORKSPACE, process.cwd()]) {
+    if (dir && !safeDirectories.has(dir)) {
+      await exec('git', ['config', '--global', '--add', 'safe.directory', dir], {env: getGitEnv()})
+      safeDirectories.add(dir)
+      added = true
+    }
+  }
+  return added
+}
+
+export async function cleanup(): Promise<void> {
+  if (tempHomeDir !== undefined) {
+    try {
+      await fs.promises.rm(tempHomeDir, {recursive: true, force: true})
+    } catch (error) {
+      // Cleanup failure is not fatal - RUNNER_TEMP is wiped when the job ends
+    }
+  }
+  tempHomeDir = undefined
+  gitEnv = undefined
+  safeDirectories.clear()
+}
+
+// Exported for tests
+export async function createTempGitHome(
+  baseTempDir: string,
+  env: {[key: string]: string | undefined}
+): Promise<string> {
+  const tempHome = await fs.promises.mkdtemp(path.join(baseTempDir, 'paths-filter-git-home-'))
+  const tempConfigPath = path.join(tempHome, '.gitconfig')
+  // The file must exist even when there is no config to copy - when $HOME/.gitconfig is missing,
+  // `git config --global` writes to an existing $XDG_CONFIG_HOME/git/config instead
+  await fs.promises.writeFile(tempConfigPath, '')
+
+  if (env.GIT_CONFIG_GLOBAL) {
+    await copyFileIfExists(env.GIT_CONFIG_GLOBAL, tempConfigPath)
+  } else if (env.HOME) {
+    await copyFileIfExists(path.join(env.HOME, '.gitconfig'), tempConfigPath)
+    if (!env.XDG_CONFIG_HOME) {
+      // When XDG_CONFIG_HOME is unset, git falls back to $HOME/.config/git/config,
+      // which would become unreadable under the new HOME
+      await copyFileIfExists(
+        path.join(env.HOME, '.config', 'git', 'config'),
+        path.join(tempHome, '.config', 'git', 'config')
+      )
+    }
+  }
+
+  return tempHome
+}
+
+// Exported for tests
+export function buildGitEnv(tempHome: string, env: {[key: string]: string | undefined}): {[key: string]: string} {
+  const newEnv = cloneDefinedEnv(env)
+  // A changed HOME redirects git of any version to the temp config. GIT_CONFIG_GLOBAL is redirected
+  // only when already set - on git >= 2.32 it replaces both global config files, so setting it
+  // unconditionally would hide an existing $XDG_CONFIG_HOME/git/config from git
+  newEnv['HOME'] = tempHome
+  if (env.GIT_CONFIG_GLOBAL) {
+    newEnv['GIT_CONFIG_GLOBAL'] = path.join(tempHome, '.gitconfig')
+  }
+  return newEnv
+}
+
+// Exported for tests
+export function resolveTempBaseDir(env: {[key: string]: string | undefined}): string {
+  return env.RUNNER_TEMP || os.tmpdir()
+}
+
+function cloneDefinedEnv(env: {[key: string]: string | undefined}): {[key: string]: string} {
+  const newEnv: {[key: string]: string} = {}
+  for (const [key, value] of Object.entries(env)) {
+    if (value !== undefined) {
+      newEnv[key] = value
+    }
+  }
+  return newEnv
+}
+
+async function copyFileIfExists(source: string, destination: string): Promise<void> {
+  try {
+    await fs.promises.access(source, fs.constants.R_OK)
+  } catch (error) {
+    return
+  }
+  await fs.promises.mkdir(path.dirname(destination), {recursive: true})
+  await fs.promises.copyFile(source, destination)
+}
Author	SHA1	Message	Date
Sascha Bratton	7b450fff21	docs: update changelog for v4.0.2 (#318 )	2026-07-02 13:45:19 -04:00
Sascha Bratton	928037783a	fix: work around git dubious ownership errors in container jobs (#317 )	2026-07-02 13:41:07 -04:00
Sascha Bratton	f3ceefdc7e	fix: use rev-parse instead of branch --show-current for older git compat (#303 )	2026-04-10 17:44:48 -04:00
Lucas Servén Marín	61f87a10cd	chore: fix GitHub spelling in logs (#278 ) * chore: fix GitHub spelling in logs * fix: rebuild dist --------- Co-authored-by: Sascha Bratton <sascha@queen.one>	2026-03-25 12:27:15 -04:00
Carly Gundy	b82ff81ffb	fix warning message (#282 ) * fix warning message * fix: rebuild dist --------- Co-authored-by: Sascha Bratton <sascha@queen.one>	2026-03-25 12:19:27 -04:00
Masaru Iritani	fbd0ab8f3e	feat: add merge_group event support * Detect commit hashes from merge_group event * Apply suggestion from @masaru-iritani Co-authored-by: Masaru Iritani <25241373+masaru-iritani@users.noreply.github.com> * refactor: update PullRequest type usage in getChangedFilesFromApi and related functions * Run `npm run pack` --------- Co-authored-by: Sascha Bratton <sascha@brattonbratton.com>	2026-03-13 21:50:09 -04:00
Sascha Bratton	efb1da7ce8	feat: add dist/ freshness check to PR workflow	2026-03-13 21:45:08 -04:00
Michal Dorner	d8f7b061b2	Merge pull request #302 from dorny/issue-299 Update README for v4	2026-03-13 20:16:52 +01:00
Michal Dorner	addbc147a9	Update README for v4	2026-03-13 20:14:22 +01:00