`This branch is out-of-date with the base branch` - warning from github

[paymog]

Here's my workflow

name: Auto PR from dev to prod

on:
  push:
    branches:
      - dev

jobs:
  check-and-create-pr:
    runs-on: blacksmith-2vcpu-ubuntu-2204
    steps:
      - uses: actions/checkout@v4
        with:
          ref: prod
      - name: Reset promotion branch
        run: |
          git fetch origin dev:dev
          git reset --hard dev
      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v6
        with:
          branch: prod-promotion
          delete-branch: true
          title: "Auto PR: Merge changes from dev to prod"
          body: "This pull request has been automatically created to merge changes from the dev branch into the prod branch."

I'm using this on a terraform repo. The idea is that when a developer merges into the dev branch, a new PR is opened to merge into the prod branch. It overall works great, but when the auto PR is opened, I see the following from github which then affects our ability to merge without triggering an audit log

Whats the correct way to avoid this issue?

[peter-evans]

Hi @paymog

In my experience that GitHub message just means that some other commit landed in prod after the prod-promotion branch was created. Presumably, you have a rule set on the repository to make sure that all pull requests are up-to-date before merging. So the resolution would be to click Update branch, wait for the checks to pass, and then merge.

Am I misunderstanding the situation?