$ git clone -n https://gitee.com/opencloudos-stream/thunderbird.git /var/lib/mock/dist-oc9-epol-build-118658-69645/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-oc9-epol-build-118658-69645/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/thunderbird
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 504fb86 !17 Update to 128.3.1. Merge pull request !17 from jiaxinyyang/master