git describe origin ?

Hi,

I was wondering what does 'git describe origin' command mean on a git repo. Does it mean ?

    a/ git describe origin/HEAD
    b/ git describe origin/master
    c/ something else

I also played with git remote and did something silly like:

$ git remote add bob /tmp/dummy # dummy does not exist $ git remote show bob fatal: '/tmp/toto': unable to chdir or not a git archive fatal: The remote end hung up unexpectedly ls-remote --heads /tmp/toto: command returned error: 1

Maybe the output could be improved to be more readable.

Thanks