Google replaced Git tags for certain source code with obtaining via Google Drive
(grapheneos.social)
I think they will eventually do it. Or they will make a new system and not have it be open source. And leave AOSP to languish. And this is why my next device is going to be a device that supports post-market OS.
I'm going to make sure of that before I buy it, because even if it's difficult, it will be worth the switch.