$ hub pull-request -i 384 -b bkeepers:master -h bkeepers:branch-name
-iis the GitHub issue number- -
bis the base, or where you want to send the pull request, with bkeepers being the owner of the repository. -his the head, or the branch where your changes live.
More infos: http://opensoul.org/2012/11/09/convert-a-github-issue-into-a-pull-request/