$ git clone -n https://gitee.com/gcdota930915/mutter.git /var/lib/mock/dist-an8_8-el9-build-170141-58911/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/dist-an8_8-el9-build-170141-58911/root/chroot_tmpdir/scmroot/mutter'...
$ git reset --hard origin/a8
HEAD is now at c40497a rebuild with gnome-desktop3-40.4