Git: Message ‘src refspec master does not match any’ when pushing commits in Git

Maybe you just need to commit. I ran into this when I did:

mkdir repo && cd repo
git remote add origin /path/to/origin.git
git add .

Oops! Never committed!

git push -u origin master
error: src refspec master does not match any.

All I had to do was:

git commit -m "initial commit"
git push origin master

Success!