.github/workflows/upload-changes.yml

name: Shared - Upload Changes

on:
  workflow_call:
    inputs:
      name:
        description: Name of the job
        required: false
        type: string
        default: Generate changes
      ref:
        description: Git ref to checkout (branch, tag, or SHA)
        required: false
        type: string
        default: ''
      run:
        description: Command that modifies the source tree
        required: true
        type: string
      artifact-name:
        description: Name of the artifact to upload changes.patch to
        required: true
        type: string

jobs:
  upload-changes:
    name: ${{ inputs.name }}
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - name: Checkout source tree
        uses: actions/checkout@v6
        with:
          ref: ${{ inputs.ref || github.ref }}
      - name: Run command
        run: ${{ inputs.run }}
      - name: Save git diff
        run: git add -A && git diff --binary --staged > changes.patch
      - name: Upload artifact
        uses: actions/upload-artifact@v7
        with:
          name: ${{ inputs.artifact-name }}
          path: changes.patch
          overwrite: true