boxen/puppet-git — pull request #4 by ericanderson (2013-02-18 14:20:41+00:00)
Title: Includes git-promp.sh in the bash completion like homebrew does

See https://github.com/mxcl/homebrew/pull/14312

You'll want to tag after this and then update boxen to refect the new version (I suggest 1.0.1)