$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-kkc.git /var/lib/mock/f40-build-1971946-25224/root/chroot_tmpdir/scmroot/fcitx5-kkc
Cloning into '/var/lib/mock/f40-build-1971946-25224/root/chroot_tmpdir/scmroot/fcitx5-kkc'...
$ git fetch origin 069fecc2eddf2adf395ce0d66bb9568e9252f57d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-kkc
 * [new ref]         069fecc2eddf2adf395ce0d66bb9568e9252f57d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 069fecc update to upstream release 5.1.4