$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-235594-82165/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-235594-82165/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin b7c1da632e7b5a6b994f220cf5ac7ef2389c5577:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         b7c1da632e7b5a6b994f220cf5ac7ef2389c5577 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7c1da6 import firefox-140.8.0-1.tl4.ap.1