postgresql-old-upgrade/postgresql-old-upgrade-15.5-5-x86_64.pkg.tar.zst build reproducible in our test framework:
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aed42ef436af7c38ea805f0e45b621ee6359748e0f8c623086cc1a5453649fe9 postgresql-old-upgrade-15.5-5-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
aed42ef436af7c38ea805f0e45b621ee6359748e0f8c623086cc1a5453649fe9 postgresql-old-upgrade-15.5-5-x86_64.pkg.tar.zst-b2.BUILDINFO.txt