Create ~/.ssh directory under your home directory (c:\Users\yuri\.ssh\ for example)
Create ~/.ssh/config file with the following content: host git.svn.1024.info
hostname git.svn.1024.info
identityFile c:\key\example.ssh
user git
port 12345
Replace path to key file and port number to suite your needs. Key file should contain decrypted key in OpenSSH format.
URL to clone repository will look like: ssh://git.svn.1024.info/studio.git User name and port number should not be specified in the URL.