iOS How to control source in other folder in Xcode4?

[mikezang]

I created a new project with git source control in Xcode4, anything is ok.

Then I add a source file in a common folder to my project, that common folder in not inside project folder.

Now I can't control that source, all source control command is in gray, what can I do?

Please give some suggestion, I need your help, thank you very much!