$ git clone -n https://src.fedoraproject.org/rpms/mozilla-filesystem.git /var/lib/mock/f31-build-56515-28225/root/chroot_tmpdir/scmroot/mozilla-filesystem
Cloning into '/var/lib/mock/f31-build-56515-28225/root/chroot_tmpdir/scmroot/mozilla-filesystem'...
$ git reset --hard e72919ad75c4971a6125101b9899c49d03f8d54b
HEAD is now at e72919a - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild