From @awbushnell in #1457:
@meaghanlewis I am now having problems with the GitHub extension from showing anything... On my local system, all I do is load Visual Studio 2017.. Open the project I am working on that is being version controlled via Git. The Visual Studio Team Explorer properly sees it as a Git repo and shows me branch etc. information, but when I switch to the GitHub view, it simply displays:

Notice in the image, GitHub empty, yet team explorer is properly showing Repo info...
Even clicking get started, just brings me to the team explorer view and nothing updates/happens.
I should note that in this case, I am NOT in any worktree at all, this is our main repo...
what is the output of running git remote -vv in the repository?
it looks correct, we are on GitHub enterprise and it spits the following 2 lines out:
origin [correcthttpspathtoourenterpriserepo] (fetch)
origin [correcthttpspathtoourenterpriserepo] (push)