Final Update: Tuesday, January 13 2015 12:15 PM UTC
We have taken action to restore critical assemblies which were missing on the Azure service hosting the Git server to mitigate the customer impact. DevOps will continue to investigate the root cause this issue .
Thank you for your patience
Initial Update: Tuesday, January 13 2015 11:39 AM UTC
We are currently investigating issues with projects on Codeplex using Git for version control
We apologize for the inconvenience and appreciate your patience.
-MSDN Service Delivery Team