$ git clone -n https://src.fedoraproject.org/rpms/menulibre.git /var/lib/mock/f39-build-1623708-38970/root/chroot_tmpdir/scmroot/menulibre
Cloning into '/var/lib/mock/f39-build-1623708-38970/root/chroot_tmpdir/scmroot/menulibre'...
$ git fetch origin 0c70e9f74a673b21fcf7deecb00d15bb7db18c59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/menulibre
 * [new ref]         0c70e9f74a673b21fcf7deecb00d15bb7db18c59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c70e9f Woopsi, a path changed