how to find status of my code with regard to my app's git repo on heroku
Regarding the status, you have several options:
git remote -v updategit status -uno
git fetch herokugit log --name-only ..heroku/master
Check if origin does point to heroku or not:
git remote -vIn that case, a simple git push isn't enough
Depending on your default push policy, you might want to make sure your branch has heroku/master as upstream branch:
git push -u heroku master