It just seems unlikely that the algorithm would be open-sourced right after a deal for Twitter is agreed upon (but before it actually goes through). I've never seen a buyout of this scale done by an individual, but I imagine the SEC and several other parties will need to be involved.

At the minimum, I would make a private Github repo first, add all relevant commits, and then make it public once there's actually content.

https://twitter.com/elonmusk/status/1518677066325053441 states that Elon Musk is to looking "make the algorithms open source."