$ git clone -n https://src.fedoraproject.org/rpms/perl-Tie-DataUUID.git /var/lib/mock/f45-build-27230-621/root/chroot_tmpdir/scmroot/perl-Tie-DataUUID
Cloning into '/var/lib/mock/f45-build-27230-621/root/chroot_tmpdir/scmroot/perl-Tie-DataUUID'...
$ git fetch origin be4d222211244f1918db26857d33bc0dacddb8cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tie-DataUUID
 * [new ref]         be4d222211244f1918db26857d33bc0dacddb8cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be4d222 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild