> Is it possible? Definitely. But that's extremely rare, especially if you want to keep a relatively natural pattern for the commits and replies.

What sort of nonsense is this? Have you ever actually known any software developers? A huge number of them keep odd hours, moreso in the infosec sphere. They wouldn't need to automate anything, just start working hours that match the timezone that they're faking... If it really is a state actor, I imagine they'd be able to find someone willing to keep those hours.