$ git clone -n https://gitee.com/src-opencloudos-rpms/thunderbird.git /var/lib/mock/dist-oc8-firefox-build-67354-33961/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-oc8-firefox-build-67354-33961/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin 4cd8c8a0497746ffc3e2c7bd028e78e2eddbb85a:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/thunderbird
 * [new ref]         4cd8c8a0497746ffc3e2c7bd028e78e2eddbb85a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cd8c8a import thunderbird-115.7.0-1.tl3.1