1. git status 查看修改的文件1. 首先add: `git add file` 提交需要修改的文件2. 删除`master`分支: `git commit -m '' `3. 拉取分支: `git pull origin dev_lhh`4. diff: `git diff dev_lhh origin/dev_lhh`5. push: `git push origin dev_lhh`