Git清理历史提交记录

# 1. Checkout

   git checkout --orphan latest_branch

# 2. Add all the files

   git add -A

# 3. Commit the changes

   git commit -am "commit message"

# 4. Delete the branch

   git branch -D master

# 5. Rename the current branch to master

   git branch -m master

# 6. Finally, force update your repository

   git push -f origin master