That's very good. Once I wanted to compile Firefox myself for some reason I no longer remember, but their Mercurial-based system was a hassle to work with. Most of us are already familiar with git. So, I know I'm going to be more inclined to make code contributions now that it uses git.
Just wish they could've chosen another git-based option like Codeberg, or even an internally-hosted server. I'm rather wary of GitHub/Microsoft swallowing up so many open source projects.