your-fork.yml

name: Your Fork

on:
  pull_request_target:
    types: [opened]

jobs:
  close:
    if: github.repository == 'hashicorp-education/learn-terraform-github-actions'
    runs-on: ubuntu-latest
    steps:
    - uses: superbrothers/close-pull-request@v3
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        # Optional. Post a issue comment just before closing a pull request.
        comment: "Hi! If you are following the Terraform GitHub Actions tutorial, please open the PR against [your personal fork](https://learn.hashicorp.com/tutorials/terraform/github-actions?in=terraform/automation#set-up-a-github-repository) of this repository. We will automatically close this PR, but if you intended to edit the example itself please feel free to re-open it."