hdiutil attach /tmp/Catalina.dmg -noverify -mountpoint /Volumes/Catalina
Paste the following command: softwareupdate --fetch-full-installer --full-installer-version 10.15.7
To package the installer into a .dmg file:
hdiutil attach /tmp/Catalina.dmg -noverify -mountpoint /Volumes/Catalina
Paste the following command: softwareupdate --fetch-full-installer --full-installer-version 10.15.7 Download Macos Catalina 10.15.7 Dmg File
To package the installer into a .dmg file: hdiutil attach /tmp/Catalina