Bug: [hostname:port]:repo.git notation no longer works (for ssh)

I've just upgraded to Debian testing (jessie), and with that I got a brand new (for me) git version:

    $ git --version
    git version 1.8.4.rc3

Some of my repos I use an ssh tunnel to reach, so when I want to reach a repo forwarded to local port 2223, using the ssh protocol, the following used to work (.git/config) in older git versions:

    [remote "exp"]
            url = [localhost:2223]:blink.git
            fetch = +refs/heads/*:refs/remotes/exp/*

However, now I get this message:

    $ git fetch exp
    fatal: ':blink.git' does not appear to be a git repository
    fatal: Could not read from remote repository.

    Please make sure you have the correct access rights
    and the repository exists.

If I don't go via the ssh tunnel (I finally have some VPN stuff these days, so I don't really need the tunnel thing anymore, but that's going to be a lot of remotes to update, so I'd prefer it just worked like it used to):

-            url = [localhost:2223]:blink.git
+            url = git:blink.git

... it works fine.