When I first add a project to source control(GIT) it will show all of the files and everything will be peachy. I can continue to work for about 30mins-1hr and all of the change
For me rebooting was not necessary. Simply closing and reopening the Solution works. Whenever that trick doesn't work, restarting Visual Studio works.
Unlike Eclipse IDE, Visual Studio doesn't provide a Restart menu item. I need to install an Extension to do this.