I recently upgraded my MacBook Pro to Snow Leopard and "git pull" returns:

rakudo $ git pull
git: 'pull' is not a git-command. See 'git --help'

Did you mean this?
        shell
rakudo $ git-pull
-bash: git-pull: command not found

I've tried reinstalling via macports, but to no avail. Then I saw this

rakudo $ git --exec-path
/Users/ovid/libexec/git-core

That surprised me as that directory does not exist, nor has it ever existed. Google is not helping here. Hopefully you can :)