$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Section.git /var/lib/mock/f45-build-23004-595/root/chroot_tmpdir/scmroot/perl-Data-Section
Cloning into '/var/lib/mock/f45-build-23004-595/root/chroot_tmpdir/scmroot/perl-Data-Section'...
$ git fetch origin 570fb68218e0f282c962bbc5aacc817bc775eed7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Section
 * [new ref]         570fb68218e0f282c962bbc5aacc817bc775eed7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 570fb68 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild