postfix/postfix-3.8.6-1-x86_64.pkg.tar.zst build reproducible in our test framework:
1496270c378ec0b076bcf32eebbfccc5ff118116f92c2367e20ed94afaa76c78 postfix-3.8.6-1-x86_64.pkg.tar.zst
930a0bf296da1ea6943418bf92af98e636eab605157bfd0f065c5731c4c39bbf postfix-3.8.6-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
930a0bf296da1ea6943418bf92af98e636eab605157bfd0f065c5731c4c39bbf postfix-3.8.6-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt