Lecture3 #75

	name: Check Sync with Main

	on:
	pull_request:
	types: [synchronize, opened, reopened]
	push:
	branches:
	- main

	jobs:
	check-sync:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	with:
	ref: ${{ github.event.pull_request.head.ref }}
	repository: ${{ github.event.pull_request.head.repo.full_name }}
	fetch-depth: 0 # Fetch all history for all branches and tags

	- name: Fetch main branch
	run: \|
	git fetch origin main

	- name: Check if branch is up-to-date with main
	run: \|
	git merge-base --is-ancestor origin/main HEAD
	- name: Fail if not up-to-date
	if: failure()
	run: \|
	echo "The branch is not up-to-date with main. Please rebase or merge main into your branch."
	exit 1

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