yarn patch-package packagename fails with 401 Unauthorized, npm run patch-package doesn't help either.
This usually happens when your company self-hosts packages, in our case with JFrog artifactory, but it can be other registries.
When patch-package fails with 401 Unauthorized for private registries, even if your command line is configured with the Identity Token, you can run this instead:
npx patch-package packagename
Source: StackOverflow Answer
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