$ git clone -n https://gitee.com/XIN_Y/thunderbird.git /var/lib/mock/dist-ocs23-epol9-build-297955-29107/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-297955-29107/root/chroot_tmpdir/scmroot/thunderbird'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/XIN_Y/thunderbird
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b61baf add extra patches