$ git clone -n https://src.fedoraproject.org/rpms/mutter.git /var/lib/mock/f33-build-449970-63402/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/f33-build-449970-63402/root/chroot_tmpdir/scmroot/mutter'...
$ git reset --hard ef89666f0044104c4732d23521171cfed5c5c830
HEAD is now at ef89666 Update to 3.38.3