Will the snail trails of code change exist? Bisecting the deep past is probably only for historians but it's notable FreeBSD has its litany maintained through the 3 or 4 distinct revision control frameworks used on the project and you can "git blame" back into deep time (within limits)

C'mon Microsoft.

Grasp the Nettle. Rebrand it to "Microsoft Linux". You know you want to. Do the complete 180.