Specifying a private key when connecting to a remote SSH repo

It would be very helpful if you could specify the path to the private key to use for ssh remotes just like in ssh.

``` git push origin master -i 'path_to_key' ```

Althought there are workarounds involving ssh config, if you have a server that has hundreds of git repos, each with the own private key, those workarounds become unusable.

This is a very popular request with thousands of comments about it, for example:

http://superuser.com/questions/232373/tell-git-which-private-key-to-use

http://stackoverflow.com/questions/3496037/how-to-specify-which-ssh-key-to-use-within-git-for-git-push-in-order-to-have-git

Thoughts?

Thanks!

Breck Yunits breck7@gmail.com