Redirecting Home Page of Specific Multisite

I am trying to get the home page only (index) of specific blogs in my multisite instance to redirect. I want people to be able to resolve links to individual pages, just the home page will redirect. But not all the subs on the multisite, only 1 or 2.

How can I specify specific blogs on the stack?

WP_Maintenance comes close but only redirects once logged in.

Im familiar with htaccess, but how can I target specific blogs?