How can I fetch an unmerged pull request for a branch I don't own?

Question

I need to pull in a specific pull request (that hasn\'t been processed into the main stream yet) in the NServiceBus repo:

https://github.com/johnsimons/NServiceBus/c

Answer 1

Once you added the upstream repo as an upstream remote (as @elias pointed out):

$ git remote add upstream git@github.com:Particular/NServiceBus

You can configure git to fetch pull requests by default:

$ git config --local --add remote.upstream.fetch '+refs/pull/*/head:refs/remotes/upstream/pr/*'

So, let's fetch it:

$ git fetch upstream
Fetching upstream
remote: Counting objects: 4, done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 4 (delta 2), reused 4 (delta 2), pack-reused 0
Unpacking objects: 100% (4/4), done.
From https://github.com/Particular/NServiceBus
 * [new ref]         refs/pull/1/head -> upstream/pr/1
 * [new ref]         refs/pull/2/head -> upstream/pr/2

And check it out:

$ git checkout pr/2
Branch pr/2 set up to track remote branch pr/2 from upstream.
Switched to a new branch 'pr/2'