Unfortunately not.
You should be able to recreate your current header layout with header element though.
It’s actually built for something like that.
So instead of using that image as the site header background, add that as the header element background image with the merge option:
https://docs.generatepress.com/article/how-to-create-a-page-hero/#optional-step-merge-with-site-header
That should help you to get started.
Let me know if this helps at all 🙂