Found this on reddit: http://www.splitbrain.org/blog/2011-06/19-automate_github_pull_requests
Adds a new "git pull-request" command. Without any arguments, it lists all the pull requests for your repo. If you give it the pull request number, it will automatically create a new branch and pull down the request. You can then test it out, merge it into master (maybe test after you merge ;) ), and push.
It may help out with the large number of pull requests that can't be automatically merged that the GitHub projects seem to be getting.
