$ git clone -n https://src.fedoraproject.org/rpms/xflr5.git /var/lib/mock/f45-build-38894-730/root/chroot_tmpdir/scmroot/xflr5
Cloning into '/var/lib/mock/f45-build-38894-730/root/chroot_tmpdir/scmroot/xflr5'...
$ git fetch origin a62889b266bcd9bf0822592b3e57321150f985cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xflr5
 * [new ref]         a62889b266bcd9bf0822592b3e57321150f985cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a62889b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild