passing SSH_AUTH_SOCK to post-commit ?

Hi,

In a post-commit I'm trying to execute:

        ssh remotehost "svn up /working/copy"

So when doing a "svn commit" on my local copy with the svn+ssh protocol
I'd like the repository's commit process to take advantage of my ssh
ForwardAgent capability to execute the post-commit.

Ideally the post-commit would pickup my SSH_AUTH_SOCK environment
variable.

Is there a way?

Thanks,

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