mozilla/treeherder-service — pull request #304 by camd (2014-12-18 16:13:33+00:00)
Title: Bug 1113160 - add git fetch to get new branches for deploying

Without this fetch, you can only deploy to branches that existed when the LAST deploy was done. By doing ``git fetch`` you get any new branches that were created since the last deploy. This allows the ``git checkout`` to succeed on line 32.