Git's ls-files command is a plumbing command that allows you to list
different sets of files based on the state of the working directory. So, if
you want to list all untracked files, you can do:
$ git ls-files --others
This includes files ignored by the .gitignore file. If you want to
exclude the ignored files and only see untracked and unignored files,
then you can do:
$ git ls-files --exclude-standard --others
There are some other flags worth checking at at git help ls-files.