Well I doubt microsoft will kill opensource software in general even for other oses.

They have been open since the death of win10 mobile and their mobile devices.

At least I hope that doesn't happen.

Things we could see that are positive could include the git intergration into windows development environment and windows insiders having git access or ms account needed for git access which isn't a bad thing by any stretch.

Full accessible git support etc.

However with twitter shutting down third party apps, they simply could close git down.