git删除所有历史提交记录，只留下最新的干净代码

 

 

1.Checkout   git checkout --orphan latest_branch2. Add all the files   git add -A3. Commit the changes   git commit -am "commit message"4. Delete the branch   git branch -D master5.Rename the current branch to master   git branch -m master6.Finally, force update your repository   git push -f origin master