You can import it as Swift Package in Xcode:

  1. Select xcodeproj
  2. Go to File -> Swift Packages -> Add Package Dependency
  3. Use as repo URL
  4. Select master branch as a source

Alternativly you can import it in Package.swift file:
Add this code to the dependencies value of your Package.swift:

  dependencies: [
      .package(url: "", .branch("master"))