$ git clone -n https://gitee.com/src-opencloudos-rpms/thunderbird.git /var/lib/mock/dist-oc8-firefox-build-229899-81415/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-oc8-firefox-build-229899-81415/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin da4df801bf3e0b3b62505102dc2af974d6b572a6:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/thunderbird
 * [new ref]         da4df801bf3e0b3b62505102dc2af974d6b572a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da4df80 import thunderbird-140.5.0-2.tl3.ap.1