I'm not entirely sure what your getting at here, but git can be run as democratically as a crypto currency where the canonical version of the project is the one with the longest chain.

Which means elections. Which means a dude/committee in charge of a server. See the problem?

I'll believe it when I see a real implementation. I think the problem is anonymity, I don't see how we can set a system up such that the results are auditable but also impossible for anyone to tie a specific vote to a specific person.

This is a very very interesting topic that I've spent a rlly long time thinking about. I wish I had more energy to go in depth for this. The gist is this:

There will be a tradeoff between anonymity and "vote buying".

You can have absolute anonymity by implementing a monero like blockchain. Each registered voter address gets one token. The thing that you can cast a vote for is also an address. The voter sends this token to an unknown address (that theoretically belongs to the voter themselves). Then, the voter votes from this address. This way, absolute anonymity is maintained as noone knows who sent the token to the address in the middle. BUT. I could buy votes like this too. I could bribe a voter to send their token to the middle address, which I control.

To prevent voter buying, you can have an open blockchain where all transactions are visible to everyone. However, you get pseudo anonymity here. Every registered voter address gets one token like above. No one except for the election commission knows which address belongs to whom. So while the election commission cannot manipulate votes, it can leak who voted for whom.

Now that being said, normal elections aren't as theoretically anonymous as well. For ballots, your name is on the envelope. A compromised election commission could leak this info as well. For EVMs, one line of code could leak who you are. The person granting you entry can note down your information. The EVM can ping this person as to which vote was cast while you were in there.

Hence, in my opinion, the second option of the open blockchain is the best one provided that the election commission is under strict regulation (which it generally is in any case).