subversionでsvn+sshでsshのデフォルトport以外(non-standard ssh port)での接続方法

Debian

Subversion Users: Re: Useing a non-standard ssh port in a svn+ssh://example.com:123456/repository
~/.ssh/config
に

host svn1 
    Hostname svn.example.com 
    Port 80 
    ForwardAgent no 
    ForwardX11 no 

host svn2 
    Hostname svn.example.com 
    Port 123456 
    ForwardAgent no 
    ForwardX11 no

等と書けば 

$ svn checkout svn+ssh://username@svn1/var/lib/rep/trunk .

とかでOK