It's only going to recycle old news. The missing piece is attribution. Had it been the usuals (DPRK, Russia, China), the attribution would have been made publicly. The fact that is has not points as a friendly - especially when Microsoft (who owns Github) had all that telemetry and very likely has the means to find out. Some serious OSINT (consistency of timezone across months if not years of commits) pointed to the Middle East. An obvious Unit name comes to mind.
"all that telemetry" doesn't count for much if it's behind a VPN
Fun fact: the guy who reported it (Andres Freund) works for Microsoft.
Another fun fact: Moscow is in the same time zone as the Middle East.