New contributor Alioth setup

[Carlos Borroto <carlos.borroto@gmail.com>]

Hi,

I'm trying to get up and running to start contributing. I have an
Alioth account and joined Debian-Med [1](I did all this a while ago).
I uploaded my public key, but I'm missing something, as I'm getting
this error:
$ git clone git+ssh://cjav-guest@git.debian.org/git/debian-med/tophat.git
Cloning into tophat...
Permission denied (publickey).
fatal: The remote end hung up unexpectedly

I can clone this repository with the read only option, but I won't be
able to commit any of my changes. Is this the proper way to start
contributing?

[1]https://alioth.debian.org/users/cjav-guest/

Thanks,
Carlos