From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Shawn O. Pearce" <spearce@spearce.org>
Subject: Re: ssh username environment variable
Date: Fri, 8 Jan 2010 12:29:58 -0800
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To: Chris Packham <judge.packham@gmail.com>
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Chris Packham <judge.packham@gmail.com> wrote:
> 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?

No.  But you can hack around it:

  cat >$HOME/bin/git-ssh
  #!/bin/sh
  ssh -l $GIT_SSH_USER "$@"
  ^D

  GIT_SSH=$HOME/bin/git-ssh GIT_SSH_USER=myname git clone ...

-- 
Shawn.