Test upstream PR changes locally [Github]

Steps to bring the changes made in a pull request into your local machine:

• Find the id of pull request you want to test (say it is #2361) as well as the name of source branch in the pull request (say it is renovate/prisma-monorepo)

• When working on a fork of a upstream repo, git remote -v may look like this:
  

  origin  [e-mail]:atosh502/chapter.git (fetch)
  origin  [e-mail]:atosh502/chapter.git (push)
  upstream        https://github.com/freeCodeCamp/chapter.git (fetch)
  upstream        https://github.com/freeCodeCamp/chapter.git (push)
  

• The PR is likely made against a branch(destination: main) in the upstream repo. In order to get the branch(source: renovate/prisma-monorepo) containing the changes for PR to the local repo use the following:
  

  # git fetch origin pull/<ID>/head:<BRANCH_NAME>
  git fetch upstream pull/2361/head:renovate/prisma-monorepo
  

• After this the upstream branch from PR will be available as a local branch and we can test the changes.

Resources

• Easy to follow and simpler

  • How to Checkout Git Pull Request
  • Checking out pull requests locally

• Hard to follow and complex

  • How can I fetch an unmerged pull request for a branch I don't own?
  • How do I check out a remote Git branch?
  • How can I check out a GitHub pull request with git?