The objet of this forum discution is standalone installer that need a patch to be up to date.
If the standalone installer is already up to date, no patch is needed.
It's important for offline backup because you can ignore patch and save hdd space.

Automatic download tool (lgogdownloader or other) can check that you have latest installer. But they can't tell you to download a patch because GOG don't care to update standalone installer and only make a separate patch.

Yes indeed, I tend to ignore patches when I use gogrepo to back up my kits (this because patches take up over 100GB of space). However I did find these were I'm not sure they have the patch included.

...

Scanner sombre
exec: setup_scanner_sombre_4212017_(11551).exe
patch: setup_scanner_sombre_9142017_(15031).exe <= full installer VR Compatibility Update [BETA BUILD]
Standalone installer version 15031 if officially a patch for GOG (en1patch1 & en1patch2).

Super Time Force Ultra
exec: setup_super_time_force_ultra_2.0.0.1.exe
patch: patch_super_time_force_ultra_2.0.1.2.exe

Thanks, I missed Scanner Sombre and I don't have Super Time Force Ultra. I'll also update the rest of the OP with your format.
edit: Scanner Sombre does not qualify as the VR update is a separate installer, not a patch

Added Hitman Blood Money. At some point it had a package with patch applied now package and patch are reverted to separate files

Thank you for this thread.
I use gogrepo with "-skipfiles patch_*" to avoid a ton of old hotfixes, but then these extra ones would be missed.

Yes, same for me, that's why it's annoying. I opened a ticket for one of them, but GOG simply ignored it.