$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-226163-81109/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-226163-81109/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin bd8d7f067412c470b0ae0bafa38a0ce0e0d1446f:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         bd8d7f067412c470b0ae0bafa38a0ce0e0d1446f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd8d7f0 import firefox-140.4.0-1.tl4.ap.1