rcbops/jenkins-build — pull request #44 by claco (2013-12-05 21:48:48+00:00)
Title: Clone repository with specific branch

Ensure that when we clone the repos in question, we are getting a ref to the
branch being tested to avoid these errors:

+ git checkout v4.2.1rc
error: pathspec 'v4.2.1rc' did not match any file(s) known to git.