The original Comirnaty vaccine was never made available to the public and deemed as "interchangeable" with the versions that were released under the same name.

https://heavy.com/news/comirnaty-vs-pfizer-vaccine-legally-distinct/

The Comirnaty vaccine just received full FDA approval, but many people online are pointing out that small print found in FDA documents describes the Pfizer-BioNTech COVID-19 vaccine as “legally distinct” from the Comirnaty vaccine. A representative from Pfizer talked to Heavy about the “legally distinct” wording.

https://www.dossier.today/p/ghost-shot-pfizer-quietly-admits?s=r

Ghost Shot: Pfizer quietly admits it will never manufacture original FDA approved COVID vaccines