SSH_ORIGINAL_ENVIRONMENT error with Snow Leopard client to a gitosis server on Debian-Collection of common programming errors

I have a server running gitosis (installed from the package manager) on Debian Lenny. I am able to perform all operations from my linux mint laptop, but from my Mac running an up-to-date Snow Leopard gives me the following error:

mica@waste Desktop$ git clone [email protected]:Poems.git
Initialized empty Git repository in /Users/micas/Desktop/Poems/.git/
ERROR:gitosis.serve.main:Repository read access denied
fatal: The remote end hung up unexpectedly
mica@waste Desktop$ ssh -v [email protected]
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
debug1: Reading configuration data /etc/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.0.156 [192.168.0.156] port 22.
debug1: Connection established.
debug1: identity file /Users/micas/.ssh/identity type -1
debug1: identity file /Users/micas/.ssh/id_rsa type 1
debug1: identity file /Users/micas/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1p1 Debian-5
debug1: match: OpenSSH_5.1p1 Debian-5 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024