dismiss-stale-approvals

A GitHub action to automatically dismiss stale approvals on pull requests.

Unlike the built in GitHub protection, this action will compare the git range-diff of the new version against the previous version, and only dismiss approvals if the diff has changed. The dismissed approvals will only consist of approvals for PRs that are not the HEAD commit or an equivalent commit as verified with git range-diff.

Usage

1. Add the below workflow to your repository's .github/workflows directory.
2. Ensure that this GitHub Action is required for pull requests, which will ensure that PRs cannot be merged until the action has run successfully.

You can make the check required with either:

• Branch protection rules (see here)
• Rulesets (see here)

See the example repository for a complete example.

name: Dismiss stale pull request approvals

on:
  pull_request:
    types: [
        opened,
        synchronize,
        reopened,
      ]


permissions:
  actions: read
  contents: read
  pull-requests: write

jobs:
  dismiss_stale_approvals:
    runs-on: ubuntu-latest
    steps:
      - name: Dismiss stale pull request approvals
        uses: withgraphite/dismiss-stale-approvals@main
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}