$ git clone -n https://src.fedoraproject.org/rpms/libuninameslist.git /var/lib/mock/f45-build-17175-496/root/chroot_tmpdir/scmroot/libuninameslist
Cloning into '/var/lib/mock/f45-build-17175-496/root/chroot_tmpdir/scmroot/libuninameslist'...
$ git fetch origin d9e7b587be5694430432a6ed51e59751efa46ad4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libuninameslist
 * [new ref]         d9e7b587be5694430432a6ed51e59751efa46ad4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9e7b58 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild