$ git clone -n https://gitee.com/src-opencloudos-rpms/thunderbird.git /var/lib/mock/dist-oc8-firefox-build-229048-81277/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-oc8-firefox-build-229048-81277/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin deeecbccb8b478e0a918c461d7b020b4f3994ef2:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/thunderbird
 * [new ref]         deeecbccb8b478e0a918c461d7b020b4f3994ef2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at deeecbc import thunderbird-140.4.0-2.tl3.ap.1