Maybe not the best tactic, but they can selectively issue a 301, and point to a page that contains a new link to the project? The new page can be cached. In t

Maybe not the best tactic, but they can selectively issue a 301, and point to a page that contains a new link to the project? The new page can be cached. In the future they can issue another 301 to point back to the original page. Hopefully web browsers will cache the new url.