$ git clone -n https://gitee.com/src-opencloudos-rpms/thunderbird.git /var/lib/mock/dist-oc8-firefox-build-72739-48089/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-oc8-firefox-build-72739-48089/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin 9add6d809aaf3d194b85fd4c885ce1970d9a4da1:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/thunderbird
 * [new ref]         9add6d809aaf3d194b85fd4c885ce1970d9a4da1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9add6d8 Add auto-patch changlog