$ git clone -n https://gitee.com/wenyuzifang/libesmtp.git /var/lib/mock/dist-an23-build-469737-74027/root/chroot_tmpdir/scmroot/libesmtp
Cloning into '/var/lib/mock/dist-an23-build-469737-74027/root/chroot_tmpdir/scmroot/libesmtp'...
$ git fetch origin bb87725a817539fa904586a5fbc1b66ccfe22375:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libesmtp
 * [new ref]         bb87725a817539fa904586a5fbc1b66ccfe22375 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bb87725 Update code from upstream