$ git clone -n https://src.fedoraproject.org/rpms/libscfg.git /var/lib/mock/f45-build-16935-493/root/chroot_tmpdir/scmroot/libscfg
Cloning into '/var/lib/mock/f45-build-16935-493/root/chroot_tmpdir/scmroot/libscfg'...
$ git fetch origin 8047e367483de46a85fc76c29d2be3888163e36c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libscfg
 * [new ref]         8047e367483de46a85fc76c29d2be3888163e36c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8047e36 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild