The https://pkg.go.dev/github.com/google/go-github/v41/github#RepositoriesService.UpdatePages API only currently supports updating the CNAME and source properties:

There are additional parameters which would be useful for consumers (i.e. terraform provider) to be able to update (see https://docs.github.com/en/rest/reference/pages#update-information-about-a-github-pages-site for reference):

• https_enforced
• public