$ git clone -n https://src.fedoraproject.org/rpms/kajongg.git /var/lib/mock/f40-build-2381464-60448/root/chroot_tmpdir/scmroot/kajongg
Cloning into '/var/lib/mock/f40-build-2381464-60448/root/chroot_tmpdir/scmroot/kajongg'...
$ git fetch origin c603f3baa26fecb874f30cd89938972be9e7665b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kajongg
 * [new ref]         c603f3baa26fecb874f30cd89938972be9e7665b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c603f3b 24.01.95