Removes untracked files from the working tree:
git clean [-f] <file|dir>
To restore tracked files to the state present on a branch, use git reset.
If the Git configuration variable
clean.requireForce is not set to false, git clean will refuse to delete files or directories unless given -f or -i. Git will refuse to modify untracked nested git repositories (directories with a .git subdirectory) unless a second -f is given.
Normally, when no path is specified, git clean will not recurse into untracked directories to avoid removing too much. Specify -d to have it recurse into such directories as well. If any paths are specified, -d is irrelevant; all untracked files matching the specified paths (with exceptions for nested git directories mentioned under --force) will be removed.
Remove present files that are ignored due to their presence in .gitingore.