visual studio 2013 - Git and TFS - copy Git project to TFS and later merge changes done in both places -

i'm experienced tfs new git. wanna know if possible , start:

i want have copy github project in tfs (it's visual studio c# project). then, want create new vs solution contain github c# project , other c# projects, , want check in tfs. because want have reference github project in new projects , being able debug , step in github project code, , also, cos i'm gonna need changes github project code. finally, if team maintains github project adds new version, want download latest, , merge changes, changes i've done in tfs version (i assume merge need solve manual conflicts).

hope makes sense.

many help.