To get your bearings regarding where you got to with your uncommitted work, you might do something like:

    git status && git diff HEAD

That will tell you which files you've touched and will show you their diffs. If necessary you can search within the diff: press '/' to bring up the search feature (assuming you're using the default less pager).

To search for all mentions of 'TODO' in the repo, ignoring untracked files:

    git grep TODO

or, case insensitive variant:

    git grep -i TODO