How to roll back all uncommitted changes (all) in GIT?

Question

git

How to roll back all uncommitted changes (all) in GIT?
Not to roll back a commit.
The commit has not yet taken place.
I guess it's probably git fetch
But the project is active and I'm very afraid of messing something up.

Answer 1

git reset --hard
if there are files that are not tracked, then also
git clean -d -f

Answer 2

Apparently git-reset, but I advise you to read man first in order to understand what you are doing.