$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-180920-80143/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-180920-80143/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin b885b9fd6d640be4c3c5606eeb92fa4217bb52a2:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         b885b9fd6d640be4c3c5606eeb92fa4217bb52a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b885b9f import firefox-128.13.0-1.tl4.ap.1