$ git clone -n https://gitee.com/wency_cn/sendmail_1770964971.git /var/lib/mock/dist-an23-build-514486-75110/root/chroot_tmpdir/scmroot/sendmail_1770964971
Cloning into '/var/lib/mock/dist-an23-build-514486-75110/root/chroot_tmpdir/scmroot/sendmail_1770964971'...
$ git fetch origin de3d38d147881b661d46341fbc60feb92e676423:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/sendmail_1770964971
 * [new ref]         de3d38d147881b661d46341fbc60feb92e676423 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de3d38d Update code from upstream