If Satoshi use git it would be good! In git convenient to work with digital signatures, and all authors will not have to think about it further.
Strongly agreed.
git is decentralized, unlike SVN. You don't have to hit the server each time you want a file or revision history.
git is quite like bitcoin in fact: sha1-hashed commits reference past sha1-hashed commits, creating a chain of trust that is trivial to validate, and difficult to hack.