If we want to see which files will be deleted we can use the

-n

option before running the command

git clean -n  /  git clean -fX -n  /  git clean -fx -n

Deletes untracked files that are not staged

git clean -f

Deletes ignored files only

git clean -f -X  /  git clean -fX

Deletes ignored and non-ignored (untracked files that are not staged) files

git clean -f -x  /  git clean -fx