$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-251583-84124/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-251583-84124/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 30baadaaad055e2b630dbbec16ab5ccfd3eaf28a:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         30baadaaad055e2b630dbbec16ab5ccfd3eaf28a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30baada import firefox-140.17.0-1.tl4.ap.1