$ git clone -n https://src.fedoraproject.org/rpms/mecab.git /var/lib/mock/f45-build-18196-511/root/chroot_tmpdir/scmroot/mecab
Cloning into '/var/lib/mock/f45-build-18196-511/root/chroot_tmpdir/scmroot/mecab'...
$ git fetch origin fceb0cba4ac08c15ecaf827b902d7e6e961d7413:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mecab
 * [new ref]         fceb0cba4ac08c15ecaf827b902d7e6e961d7413 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fceb0cb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild