$ git clone -n https://src.fedoraproject.org/rpms/emacs-json-reformat.git /var/lib/mock/f45-build-8104-376/root/chroot_tmpdir/scmroot/emacs-json-reformat
Cloning into '/var/lib/mock/f45-build-8104-376/root/chroot_tmpdir/scmroot/emacs-json-reformat'...
$ git fetch origin 2e72af9f4ae827742130dc52527d6d2848e05b24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-json-reformat
 * [new ref]         2e72af9f4ae827742130dc52527d6d2848e05b24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e72af9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild