$ git clone -n https://gitee.com/lizhao2025/postfix.git /var/lib/mock/dist-an23-build-496962-74608/root/chroot_tmpdir/scmroot/postfix
Cloning into '/var/lib/mock/dist-an23-build-496962-74608/root/chroot_tmpdir/scmroot/postfix'...
$ git fetch origin fbfb328fca282730b45090c6bcac2839d26de6e3:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/postfix
 * [new ref]         fbfb328fca282730b45090c6bcac2839d26de6e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbfb328 Update code from upstream