saltstack/salt — pull request #15564 by s0undt3ch (2014-09-06 00:23:31+00:00)
Title: Use the first parent on git describe when available.

This is necessary since we now merge forward and git describe thinks the
HEAD with the less commits is the HEAD to use.

A little more information about this behaviour can be found here:

http://www.xerxesb.com/2010/git-describe-and-the-tale-of-the-wrong-commits/