If the output matches this string, the file is and untouched.
: If your only working computer is a PC, you cannot access the Mac App Store. Downloading a DMG from Google Drive allows you to use tools like TransMac to create a bootable installer on Windows. macos high sierra 10136 dmg google drive best
Open Terminal (Applications > Utilities > Terminal) and type: If the output matches this string, the file is and untouched