GitHub for Windows

[[Unknown]]

This means that your editor changed the *.vcxproj files. Probably you upgraded them. The easiest thing to do is (from that shell):

git checkout Common Core GPU UI ext Windows headless unittest
cd native && git checkout native.vcxproj && cd ..

This will reset everything. Another option you have is committing your changes, but you may end up with conflicts that way.

-[Unknown]