$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-Gladiator.git /var/lib/mock/f45-build-23101-595/root/chroot_tmpdir/scmroot/perl-Devel-Gladiator
Cloning into '/var/lib/mock/f45-build-23101-595/root/chroot_tmpdir/scmroot/perl-Devel-Gladiator'...
$ git fetch origin 8aa1cd4770576c0ff6758e6d277d940e43522fab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-Gladiator
 * [new ref]         8aa1cd4770576c0ff6758e6d277d940e43522fab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8aa1cd4 Perl 5.44 rebuild