$ git clone -n https://gitee.com/wenjie2025/postfix_1773347416.git /var/lib/mock/dist-an23-build-519162-75682/root/chroot_tmpdir/scmroot/postfix_1773347416
Cloning into '/var/lib/mock/dist-an23-build-519162-75682/root/chroot_tmpdir/scmroot/postfix_1773347416'...
$ git fetch origin b639c878e037bb0e85825de3b910f3047b1e6ba2:KOJI_FETCH_HEAD
From https://gitee.com/wenjie2025/postfix_1773347416
 * [new ref]         b639c878e037bb0e85825de3b910f3047b1e6ba2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b639c87 Update code from upstream