$ git clone -n https://src.fedoraproject.org/rpms/perl-parent.git /var/lib/mock/f45-build-27719-625/root/chroot_tmpdir/scmroot/perl-parent
Cloning into '/var/lib/mock/f45-build-27719-625/root/chroot_tmpdir/scmroot/perl-parent'...
$ git fetch origin 186b52bfcd70387d1b76c11bfea2c839a4e51a4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-parent
 * [new ref]         186b52bfcd70387d1b76c11bfea2c839a4e51a4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 186b52b Increase release to favour standalone package