Probable microsoft inside talk about github acquisition:
m$ lawyers: We need to pull this github repository to find our patents and claim the suit against this company that is making some android powered hardware, also the other one from company that want to make operating system with double mouse click
m$ management: This patent violation search is taking to much resources so let’s acquire github and order them to develop some automatic shit over their repositories so we don’t have to pull those repos all over again
The rest you can read in news :)