git init 仓库名字
# 建立远程连接
git remote add origin https://github.com/user/repo.git    
#获取远程更新
git fetch origin  
# 把更新的内容合并到本地分支
git merge origin/master 
# 加入差异的文件,就是本地修改的文件
git add . 
git commit -m "Commit message" 
git push origin master

git init()
git remote add origin https://github.com/user/repo.git
git add .
git commit -m "Commit message"
push origin master

git fetch origin master
git merge origin/master

git pull