Who has isolated and mapped the SARS-CoV-2 virus? Who has shown that the SARS-CoV-2 virus replicates in human cells in a laboratory setting? How do you know the Moderna and Pfizer messenger RNA you referred to in your post are from the SARS-CoV-2 virus?
The CDC, on page 43 of the document linked below, admits that... "no quantified virus isolates of the 2019-nCoV [virus] are currently available."
https://www.fda.gov/media/134922/download
That document has an effective date of 12/1/2020.
So why aren't quantified 2019-nCoV virus isolates available to the CDC?