[support] Git and multisite: mutually exclusive?

I've been racking my brain trying to come up with an elegant git workflow for multisite. If I just want the site portions under git control, then it's not an issue. But if I want core as part of each, then it becomes so. I considered using git submodule, but then the workflow gets more complex on the local level. Has anyone found a nice way to handle this? --- drupal.org/user/367108 linkedin.com/in/jeffrgreenberg accidentalcoder.com / ayendesigns.com @accidentalcoder