Steps to clear out the history of a git/github repository

git-clearHistory

-- Remove the history from 
rm -rf .git

-- recreate the repos from the current content only
git init
git add .
git commit -m "Initial commit"

-- push to the github remote repos ensuring you overwrite history
git remote add origin [email protected]:<YOUR ACCOUNT>/<YOUR REPOS>.git
git push -u --force origin master

Using just a branch isnt a good concept for branching.

Its always depends about how your workflow looks like and then learn how to branch.

Best regards

worked like charm