$ git clone -n https://src.fedoraproject.org/rpms/perl-CPAN-Meta-Check.git /var/lib/mock/f45-build-21975-589/root/chroot_tmpdir/scmroot/perl-CPAN-Meta-Check
Cloning into '/var/lib/mock/f45-build-21975-589/root/chroot_tmpdir/scmroot/perl-CPAN-Meta-Check'...
$ git fetch origin d8a6fe741df59f296e7ab7235155032c8e13ad3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CPAN-Meta-Check
 * [new ref]         d8a6fe741df59f296e7ab7235155032c8e13ad3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8a6fe7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild