The Archlinux package repositories[1][2]. At least, they seem to be using svn first and then mirror to git. I wonder if there's a benefit in doing so, or if it's just because of inertia.

[1] https://git.archlinux.org/svntogit/

[2] https://wiki.archlinux.org/index.php/Arch_Build_System#Retri...