reproducible builds re: podman build vs rpm-ostree compose container-encapsulate

[miabbott]

In #673 the topic of producing a bootc image from the same build system that produces ostree commits was discussed, where it was noted that rpm-ostree compose container-encapsulate could be used to generate an OCI image from an ostree commit.

This got me thinking on a tangent about the feasibility of producing an OCI image via rpm-ostree compose container-encapsulate which is identical to an OCI image produced by podman build and a Containerfile with FROM quay.io/fedora/fedora-bootc:40 etc

Is this kind of reproducibility a goal or would it just be a neat party trick? I wonder if it would be useful to ease the migration from a "pure" ostree solution (i.e. RHEL for Edge) to a bootc solution.