jenkinsci/git-client-plugin — pull request #122 by dbroady1 (2014-03-17 15:41:57+00:00)
Title: Allow tracking submodules.

Git>=1.8.2 allows the ability for submodules to track the tip of a branch
versus using just a single SHA-1 for the submodule, and this commit allows
that for the CliGitAPIImpl. JGitAPIImpl just gets a "not implemented".