$ git clone -n https://src.fedoraproject.org/rpms/perl-CPANPLUS-Shell-Default-Plugins-Diff.git /var/lib/mock/f45-build-22087-589/root/chroot_tmpdir/scmroot/perl-CPANPLUS-Shell-Default-Plugins-Diff
Cloning into '/var/lib/mock/f45-build-22087-589/root/chroot_tmpdir/scmroot/perl-CPANPLUS-Shell-Default-Plugins-Diff'...
$ git fetch origin c8c4e3e2db7b2f73fe48eb8b88b0d8f3e450e4b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CPANPLUS-Shell-Default-Plugins-Diff
 * [new ref]         c8c4e3e2db7b2f73fe48eb8b88b0d8f3e450e4b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8c4e3e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild