Answer by Vidhu Verma for Delete commits from a branch in Git

With more than 30 ansers here, I'll keep it simple with what works for me

Deleting the .git folder may cause problems in your git repository. If you want to delete all your commit history but keep the code in its current state, it is very safe to do it as in the following:

Checkout

git checkout --orphan latest_branch

Add all the files

git add -A

Commit the changes

git commit -m "commit message"

Delete the branch

git branch -D master

Rename the current branch to master

git branch -m master

Finally, force update your repository

git push -f origin master

PS: this will not keep your old commit history around.