ssh username environment variable

Hi List,

Just wondering if there is an environment variable I can use to tell git or ssh what user name to use for the ssh transport?

I would normally use
  git clone ssh://myname@example.com/repo.git

but I'm cloning to a relatively public network drive  (corporate
overlords don't want git no mater what I say) so I want to do
something like
  GIT_SSH_USER=myname  git clone ssh://example.com/repo.git

So that my user name doesn't show in the resulting remote.origin.url

I know I can probably just remove my user name from the config after the the fact but I have to do this for a few repos so I thought I'd ask if there was a magic environment variable I could set.

Thanks.