$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-229051-81277/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-229051-81277/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 611c30cec6cd2dc403f2d18a4483bb6dfd2d5705:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         611c30cec6cd2dc403f2d18a4483bb6dfd2d5705 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 611c30c import firefox-140.4.0-3.tl3.ap.1