$ git clone -n https://src.fedoraproject.org/rpms/perl-Declare-Constraints-Simple.git /var/lib/mock/f45-build-23058-595/root/chroot_tmpdir/scmroot/perl-Declare-Constraints-Simple
Cloning into '/var/lib/mock/f45-build-23058-595/root/chroot_tmpdir/scmroot/perl-Declare-Constraints-Simple'...
$ git fetch origin d30eeef0d0995cd314c3b6ce5e740c49d9ea06aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Declare-Constraints-Simple
 * [new ref]         d30eeef0d0995cd314c3b6ce5e740c49d9ea06aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d30eeef Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild