$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-245835-83386/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-245835-83386/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 752afb1b894df311bc464e157dfe1f693a6cc3c4:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         752afb1b894df311bc464e157dfe1f693a6cc3c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 752afb1 import firefox-140.13.0-1.tl4.ap.1