Rebase onto Upstream #2713

	name: Rebase onto Upstream

	on:
	schedule:
	- cron: '0 * * * *' # ⏰ Every hour
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	workflow_dispatch:

	jobs:
	rebase:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout your forked master branch
	uses: actions/checkout@v4
	with:
	ref: master
	fetch-depth: 0 # Needed to rebase properly

	- name: Set Git user
	run: \|
	git config user.name "github-actions[bot]"
	git config user.email "github-actions[bot]@users.noreply.github.com"

	- name: Add upstream remote
	run: \|
	git remote add upstream https://github.com/paritytech/polkadot-sdk.git
	git fetch upstream

	- name: Create backup branch (in case of conflict)
	run: \|
	git branch backup-master-before-rebase

	- name: Attempt rebase onto upstream/master
	id: rebase
	run: \|
	if git rebase upstream/master; then
	echo "Rebase successful"
	else
	echo "Rebase conflict, aborting..."
	git rebase --abort
	git reset --hard backup-master-before-rebase
	echo "REBASE_FAILED=true" >> $GITHUB_ENV
	fi

	- name: Check if HEAD is updated after rebase
	id: head_check
	run: \|
	CURRENT_HEAD=$(git rev-parse HEAD)
	git fetch origin master
	REMOTE_HEAD=$(git rev-parse origin/master)
	if [ "$CURRENT_HEAD" != "$REMOTE_HEAD" ]; then
	echo "HEAD_UPDATED=true" >> $GITHUB_ENV
	else
	echo "HEAD_UPDATED=false" >> $GITHUB_ENV
	fi

	- name: Push changes if rebase was successful
	if: env.REBASE_FAILED != 'true'
	run: \|
	git push origin master --force

	- name: Cleanup backup branch
	if: always()
	run: \|
	git branch -D backup-master-before-rebase \|\| true

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