$ git clone -n https://src.fedoraproject.org/rpms/perl-Consumer-NonBlock.git /var/lib/mock/f45-build-22546-593/root/chroot_tmpdir/scmroot/perl-Consumer-NonBlock
Cloning into '/var/lib/mock/f45-build-22546-593/root/chroot_tmpdir/scmroot/perl-Consumer-NonBlock'...
$ git fetch origin c6e418a95391a027c6bd27cc1b107dfa1de9f377:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Consumer-NonBlock
 * [new ref]         c6e418a95391a027c6bd27cc1b107dfa1de9f377 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6e418a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild