Red Gate SQL Source Control has been updated to include Git and Mercurial support (as well as Perforce and TFS). Be forewarned that their DVCS integration is not 100% feature complete in relation to their SVN product, as basic features such as viewing history of an object are not supported from within SSMS. This may be a deal-breaker if other Red Gate tools like SQL Compare are part of your workflow.
Our workaround was to install TortoiseGit or GitExtensions and navigate to the repository on disk to drill into the specifics. It works but is a bit clunky.
