> Torvalds turned over maintenance on 26 July 2005 to Junio Hamano, a major contributor to the project.[25] Hamano was responsible for the 1.0 release on 21 December 2005, and remains the project's maintainer.[26]

I'm guessing Torvalds still has a lot of control if push came to shove, so we can assume git is executively controlled by Torvalds and Hamano.