Security Run Output

For quite some time now, I have been receiving a warning message of
1025 packages with mismatched checksums in the daily "Security Run
Output" email. They are all prefixed with "py39-"

I don't want to wast time posting the entire list here, but it is
available upon request if someone wants it. My question is, how do I
correct this problem? This is a FreeBSD 13.1-release-p7 machine.

Thanks