$ git clone -n https://gitee.com/src-opencloudos-rpms/thunderbird.git /var/lib/mock/dist-oc8-firefox-build-242885-83050/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-oc8-firefox-build-242885-83050/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin c3b2743e89137587aa2b02d9db1d2229606867fd:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/thunderbird
 * [new ref]         c3b2743e89137587aa2b02d9db1d2229606867fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3b2743 import thunderbird-140.12.0-1.tl3.ap.1