How to customize toolbar in Team Explorer Source Control Explorer sub-window?

Question

I have Team Explorer for Visual Studio 2012 installed, which lets me then access files stored on my employer's TFS server. I mainly use it to check out files, modify them in a non-VS tool, then upload the changed versions to TFS. In the Team Explorer window, there's a Source Control Explorer window/tab that has its own toolbar separate from the main Team Explorer window's toolbar:

I want to customize this toolbar, to add a button. But I can't find anything that matches it under TOOLS-> Customize-> Commands-> Toolbar. Googling gets me unrelated results.

Answer 1

AFAIK you can't. That window is just a helpful manager - so you have open, synchronize, create folder, add file, delete, etc - which is what the window is for. What would you want to add there?