git clean -n

Print what will be deleted but does not delete anything

git clean 

Deletes all files including untracked file but not directories

git clean -d -f

Deletes all files including untracked files also any empty directories but does not delete ignored files. Safer alternative is to use git stash -u

git clean -d -f -x

Deletes all file including untracked files, also any empty directories also ignored files. Safer alternative is to use git stash --all

git clean -i

Clean worksspace interactively