git 清空全部commit記錄方法

說明：例如將代碼提交到git倉庫，將一些敏感信息提交，因此須要刪除提交記錄以完全清除提交信息，以獲得一個乾淨的倉庫且代碼不變

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