1.下载远程代码
git clone <地址>

2.查看远程所有分支
git branch -a

3.创建并切换到本地develop分支
git checkout -b develop origin/develop

4.更新远程develop分支代码到本地
git pull origin develop

5.合并develop分支
git merge develop

6.推送本地develop分支代码到远程develop分支
git push origin develop

7.删除本地develop分支
git branch -d develop

8.删除远程develop分支
git push origin --delete develop