Adding content above the navigation (which appears above the header)

Hi there,

I'm trying to add some content above the navigation. (This will be an occasional message that appears at the top of the screen.) The navigation itself is configured through the customizer to be above the header, so I can't use the hook generate_before_header(). I'm looking for the equivalent of generate_before_navigation(), which does not exist.

I've looked at the hooks listed on https://docs.generatepress.com/collection/hooks/ and didn't see anything that I thought would work. Are there other hooks, or a filter, I could use?

Thank you.

–Saul