main.yml

name: Sync master to main
on:
  push:
    branches:
      - "master"
jobs:
  diff:
    runs-on: ubuntu-latest
    outputs:
      hash-master: ${{ steps.hash-master.outputs.hash-master }}
      hash-main: ${{ steps.hash-main.outputs.hash-main }}
    steps:
    - uses: actions/checkout@v3
      with:
        fetch-depth: 0
    - id: hash-master
      name: Hash the master branch
      run: |
        hash_master=$( git rev-parse origin/master )
        echo "$hash_master"
        echo "hash-master=$hash_master" >> $GITHUB_OUTPUT
    - id: hash-main
      name: Hash the main branch
      run: |
        hash_main=$( git rev-parse origin/main )
        echo "$hash_main"
        echo "hash-main=$hash_main" >> $GITHUB_OUTPUT
  sync:
    needs: diff
    if: needs.diff.outputs.hash-master != needs.diff.outputs.hash-main
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with:
        fetch-depth: 0
    - name: Checkout master
      run: git checkout master
    - name: Sync master to main
      run: git push origin master:main