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GIT for source control, RTC for planning & Work Items

We are using RTC for planning and work items, but we have GIT and Team City for source and build. Any ideas on how to integrate the two? I found an article from 2009 for RTC 2.x, but we're on 3.0.1.3 and since the 2.x article came out there hasn't been any mention of it.
Any help or ideas would be greatly appreciated.