Github action to auto deploy to branch QA once a new version tag is created

deploy.yml

name: deploy-to-qa
on:
  workflow_dispatch:
  push:
    tags: [ 'v*' ]

jobs:
  update_qa:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
          ref: 'qa'
      - name: 'push to qa'
        run: |
          git pull --all
          git merge origin/dev --ff-only
          git push