$ git clone -n https://src.fedoraproject.org/rpms/perl-Dist-Zilla-Plugin-Git-Contributors.git /var/lib/mock/f45-build-23227-596/root/chroot_tmpdir/scmroot/perl-Dist-Zilla-Plugin-Git-Contributors
Cloning into '/var/lib/mock/f45-build-23227-596/root/chroot_tmpdir/scmroot/perl-Dist-Zilla-Plugin-Git-Contributors'...
$ git fetch origin eaa1263ef5a09335880e037f4f6e0096254e25a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Dist-Zilla-Plugin-Git-Contributors
 * [new ref]         eaa1263ef5a09335880e037f4f6e0096254e25a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eaa1263 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild