Rollback to last git commit

Question

I just did a

git commit -m \"blah\"

then I added some files, how do I rollback and remove what is in my current files that have not yet be

Answer 1

An easy foolproof way to UNDO local file changes since the last commit is to place them in a new branch:

git branch changes
git checkout changes
git add .
git commit

This leaves the changes in the new branch. Return to the original branch to find it back to the last commit:

git checkout master

The new branch is a good place to practice different ways to revert changes without risk of messing up the original branch.