Partial Terraform

Once in a while I discover an interesting setting in the resources I manage, such as


and I want to track only this setting. Sometimes even without prior state - restoring the state directly from the resource endpoint I supply to it, which is enough to identify the resource for a single request, such as GitLab project URL as in this case.

This will not only make Terraform care about partial resource definition, but will also make it stateless. I wonder how hard is it to patch Terraform to allow this use case?