How to direct CXF-based build, to auto-generate namespace for xmlbeans derived from XSD having no targetNamespace?

I am maintaining a legacy CXF-based system that used to have all XSDs explicitly contain targetNamespace="http://ift.tt/1B0U1ym".

That worked well for the maven-based build to auto-generate xmlbeans with properly nested directories based on package name derived from the namespace:

But when I updated the XSDs (dictated by an external source, not in my organization's control), they came without a targetNamespace (everything else is fine, including elementFormDefault="qualified") and so the build environment did not produce a package name and directory hierarchy:

What do I need to change in my project setup to work properly with those new XSDs?

Do I need to "hack" those XSDs to contain a dummy/desired targetNamespace?

Or is there a more correct way of handling this, not relying on a targetNamespace attribute to be present?