$ git clone -n https://src.fedoraproject.org/rpms/libjaylink.git /var/lib/mock/f45-build-16409-486/root/chroot_tmpdir/scmroot/libjaylink
Cloning into '/var/lib/mock/f45-build-16409-486/root/chroot_tmpdir/scmroot/libjaylink'...
$ git fetch origin 271e1d7477c60808cde56dec976c2eb834e4a5ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libjaylink
 * [new ref]         271e1d7477c60808cde56dec976c2eb834e4a5ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 271e1d7 update to 0.5.0