$ git clone -n https://src.fedoraproject.org/rpms/perl-Spellunker.git /var/lib/mock/f45-build-26245-616/root/chroot_tmpdir/scmroot/perl-Spellunker
Cloning into '/var/lib/mock/f45-build-26245-616/root/chroot_tmpdir/scmroot/perl-Spellunker'...
$ git fetch origin 5ca3d93da5b97c841e08685c35d6ee59c9b325f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Spellunker
 * [new ref]         5ca3d93da5b97c841e08685c35d6ee59c9b325f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ca3d93 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild