$ git clone -n https://src.fedoraproject.org/rpms/perl-SGMLSpm.git /var/lib/mock/f45-build-26070-614/root/chroot_tmpdir/scmroot/perl-SGMLSpm
Cloning into '/var/lib/mock/f45-build-26070-614/root/chroot_tmpdir/scmroot/perl-SGMLSpm'...
$ git fetch origin bdc044c5c7a477ee6bb7d96fa6a070dccb6e0f92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-SGMLSpm
 * [new ref]         bdc044c5c7a477ee6bb7d96fa6a070dccb6e0f92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdc044c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild