Git: Let's back it up

Say you are developing a new feature and you realize after few commits that you went off to a way different route that you suppose to and you need to back it up few commits and start over... this definitely would be a cleaner way vs trying to remove what was done manually. How to do it though?

Check out what you want and get rid of all that code...

git reset --hard 0d3b7ac32

Then you would push it up

git push origin +master

Pretty simple once you know it.