SmartGit should support git-repo. https://code.google.com/p/git-repo/
This is a multiple repository management tool built by google used by several large fortune 500 companies. It provides a easy way to sync a large number of repos (over 100 or more) to a specified commit tag that is specified in a manifest file, which is in it's own repo. This is how we are managing our software build where each project can contain hundreds of repos.
Customer support service by UserEcho