I have downloaded a Catalina installer from App Store / full-fetch terminal method.
When I run pkgutil at the installer located in the Applications folder it says certificate untrusted. This is what I get in Terminal:
Package "Install macOS Catalina": Status: signed by untrusted certificate Certificate Chain: 1. Software Signing SHA256 Fingerprint: 2A A4 B9 97 3B 7B A0 7A DD 44 7E E4 DA 8B 53 37 C3 EE 2C 3A 99 19 11 E8 0E 72 82 E8 A7 51 FC 32 ------------------------------------------------------------------------ 2. Apple Code Signing Certification Authority Expires: 2026-10-24 17:39:41 +0000 SHA256 Fingerprint: 5B DA B1 28 8F C1 68 92 FE F5 0C 65 8D B5 4F 1E 2E 19 CF 8F 71 CC 55 F7 7D E2 B9 5E 05 1E 25 62 ------------------------------------------------------------------------ 3. Apple Root CA Expires: 2035-02-09 21:40:36 +0000 SHA256 Fingerprint: B0 B1 73 0E CB C7 FF 45 05 14 2C 49 F1 29 5E 6E DA 6B CA ED 7E 2C 68 C5 BE 91 B5 A1 10 01 F0 24