$ git clone -n https://src.fedoraproject.org/rpms/perl-Dist-CheckConflicts.git /var/lib/mock/f45-build-23195-596/root/chroot_tmpdir/scmroot/perl-Dist-CheckConflicts
Cloning into '/var/lib/mock/f45-build-23195-596/root/chroot_tmpdir/scmroot/perl-Dist-CheckConflicts'...
$ git fetch origin 3fb7b5fdd007803f9bb8584a647f532e7cb07e00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Dist-CheckConflicts
 * [new ref]         3fb7b5fdd007803f9bb8584a647f532e7cb07e00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fb7b5f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild