Configuration for multiple sites in one repo

I have a new website being managed with Workers in a new repo, and that works well. (301 permanent)

What I would like to do is manage the redirects for the old domain in the same repo if possible. So, one wrangler config would handle deploying and the various JS for a single page app. Another wrangler to deploy code for which would basically be some redirects. Is this possible to do? Both websites/domains would be managed under one main Cloudflare account.

You can use page rule forwarding feature for such wildcard redirection. Please search about it.