$ git clone -n https://src.fedoraproject.org/rpms/perl-Perl-Critic-Dynamic.git /var/lib/mock/f45-build-25730-612/root/chroot_tmpdir/scmroot/perl-Perl-Critic-Dynamic
Cloning into '/var/lib/mock/f45-build-25730-612/root/chroot_tmpdir/scmroot/perl-Perl-Critic-Dynamic'...
$ git fetch origin a8e64bfe72f6947d03b4b2809214c8083e04744c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Perl-Critic-Dynamic
 * [new ref]         a8e64bfe72f6947d03b4b2809214c8083e04744c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8e64bf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild