$ git clone -n https://src.fedoraproject.org/rpms/perl-Parse-CPAN-Distributions.git /var/lib/mock/f45-build-25650-612/root/chroot_tmpdir/scmroot/perl-Parse-CPAN-Distributions
Cloning into '/var/lib/mock/f45-build-25650-612/root/chroot_tmpdir/scmroot/perl-Parse-CPAN-Distributions'...
$ git fetch origin cd8f3a52d6835200ee5868c555a9d3cda059d65b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Parse-CPAN-Distributions
 * [new ref]         cd8f3a52d6835200ee5868c555a9d3cda059d65b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd8f3a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild