$ git clone -n https://src.fedoraproject.org/rpms/perl-CPAN.git /var/lib/mock/f45-build-21966-589/root/chroot_tmpdir/scmroot/perl-CPAN
Cloning into '/var/lib/mock/f45-build-21966-589/root/chroot_tmpdir/scmroot/perl-CPAN'...
$ git fetch origin a4086c26e36776aa8ca504f138ae37bbbf893ecc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CPAN
 * [new ref]         a4086c26e36776aa8ca504f138ae37bbbf893ecc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4086c2 Perl 5.44 re-rebuild of bootstrapped packages