$ git clone -n https://gitee.com/opencloudos-stream/firefox.git /home/lib/mock/dist-ocs23-build-239219-21516/root/chroot_tmpdir/scmroot/firefox
Cloning into '/home/lib/mock/dist-ocs23-build-239219-21516/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/firefox
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd62cae Rebuilt for loongarch release