Fixing the "Back to site" link on the login page (https -> http)

Hi,

I run a Multisite network that uses https/ssl for the admin. The front-end is not behind https, though.

On the login page (https://somesite.com/wp-login.php), there is a link back to the site at the bottom, below the login form. This link actually links to the https version of my site (ie. https://somesite.com/).

I’d like this to link to the http version of the site, if that makes sense.

I’ve taken a look at wp-login.php and it is calling this to construct that link:

home_url( '/' )

This seems perfectly reasonable to do, except that home_url automatically puts https in front of the home url when the function is called on an SSL’d page.

Is there a way to over-ride this?

Thanks