I got tired of typing my password for my bitbucket repo so I looked up a way to use ssh keys but happened upon the osx credential keychain. I thought I had installed it all
Try "git" status (with the quotes). If that works, you've aliased git to something else (probably alias git="git credential-osxkeychain"), and you should look in ~.profile to see if you can remove the alias.
(See the attached commentary for the debugging steps and eventual resolution).