Hi,
Odoo.sh won't allow any users to update or create anything into the production branch. Odoo.sh only allows doing in staging and development branches. But you can not move that code or module into any other branch.
What you need to do is create a module using scaffold in your local and commit it to odoo.sh.

You can refer to this article for reference.
https://www.cybrosys.com/odoo/odoo-books/odoo-15-development/ch3/scaffold-command/

Hope it helps