$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-180808-80126/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-180808-80126/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 14436e5bcb8d48f7034c0cdfd538695f37dc47db:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         14436e5bcb8d48f7034c0cdfd538695f37dc47db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14436e5 import firefox-128.13.0-1.tl3.ap.1