How do i clone work from the master branch to a new one?

From your description I can imagine that you're working on the master branch, but it seems that you haven't added changes and you haven't created any commit ( I guest only ) In that case, you can just create a new branch

git checkout -b new_branch_name

In case you committed your work into commits in master branch and already pushed it to Github (ignore below commands if you haven't), you can back to master branch reverse it

git checkout master 
git reset --hard HEAD~HERE_NUMBER_OF_YOUR_NEW_COMMITS
git push origin master -f
git checkout new_branch_name #To continue work on new branch (with all your new works remained)

Then, commit changes ( this should be repeated many times when you have completed sth

git add .
git commit -m "I created new feature"
git push new_branch_name

And then, from Github, you can create a pull request so your tutor / teammate can review