$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-235250-82112/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-235250-82112/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 916fb4788230c516b22b4828df06f4089db569d2:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         916fb4788230c516b22b4828df06f4089db569d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 916fb47 import firefox-140.8.0-2.tl3.ap.1