在github建立两个仓库

第一个

git clone https://github.com/kvylin/hugo.git
cd hugo
rm -rf public
git add . 提交删除public文件夹
git submodule add https://github.com/kvylin/kvylin.github.io.git public
#下载子模块####git submodule update --init --recursive
cd public
git checkout master
cd ../
#创建博客 
hugo new posts/Golang-test.md
#每次执行下面4行
./d.sh
_______
git add -A
git commit -m "Update blog"
git push origin master

第二个

#deploy.sh
#!/bin/bash
echo -e "\033[0;32mDeploying updates to GitHub...\033[0m"
# Build the project.
hugo # if using a theme, replace by `hugo -t <yourtheme>`
# Go To Public folder
cd public
# Add changes to git.
git add -A
# Commit changes.
msg="rebuilding site `date`"
if [ $# -eq 1 ]
  then msg="$1"
fi
git commit -m "$msg"
# Push source and build repos.
git push origin master
# Come Back
cd ..

参考1：https://kaichu.io/2015/07/12/my-first-post/

参考2: https://blog.hiweeds.net/post/hugo-deploy-as-submodule-on-github/