$ git clone -n https://gitee.com/wency_cn/libesmtp.git /var/lib/mock/dist-an23-build-502351-74802/root/chroot_tmpdir/scmroot/libesmtp
Cloning into '/var/lib/mock/dist-an23-build-502351-74802/root/chroot_tmpdir/scmroot/libesmtp'...
$ git fetch origin 14c62849025cc6a70ee902ce189190ff61cea8f7:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libesmtp
 * [new ref]         14c62849025cc6a70ee902ce189190ff61cea8f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14c6284 Update code from upstream