I’ve recently bumped into the following useful gist, which I decided to share with all of you.

It’s possible to instruct git to fetch pull requests together with the other project branches. Simply open the .git/config file for your project and add the following line under the [remote "origin"] section:

fetch = +refs/pull/*/head:refs/remotes/origin/pr/*

To enable this behaviour for all of your git projects, simply run:

git config --global --add remote.origin.fetch "+refs/pull/*/head:refs/remotes/origin/pr/*"

To fetch all the pull requests for a project:

git fetch origin

To checkout a specific pull request (say, #53):

git checkout pr/53

Enjoy!