GitHub Packages tweaks

- cleanup comments from #10938
- fix download URL
- remove incorrect comment

Library/Homebrew/dev-cmd/pr-upload.rb

@@ -101,24 +101,27 @@ module Homebrew
     bottle_args += json_files
 
     if args.dry_run?
-      service =
+      dry_run_service = if github_packages?(bottles_hash)
-        if internet_archive?(bottles_hash)
+        # GitHub Packages has its own --dry-run handling.
+        nil
+      elsif internet_archive?(bottles_hash)
         "Internet Archive"
       elsif bintray?(bottles_hash)
         "Bintray"
       elsif github_releases?(bottles_hash)
         "GitHub Releases"
-        elsif github_packages?(bottles_hash)
-          "GitHub Packages"
       else
         odie "Service specified by root_url is not recognized"
       end
+
+      if dry_run_service
         puts <<~EOS
           brew #{bottle_args.join " "}
-        Upload bottles described by these JSON files to #{service}:
+          Upload bottles described by these JSON files to #{dry_run_service}:
             #{json_files.join("\n  ")}
         EOS
-      return unless github_packages?(bottles_hash)
+        return
+      end
     end
 
     check_bottled_formulae(bottles_hash)

Library/Homebrew/download_strategy.rb

@@ -543,6 +543,8 @@ class CurlGitHubPackagesDownloadStrategy < CurlDownloadStrategy
 
     _, org, repo, = *url.match(GitHubPackages::URL_REGEX)
 
+    # remove redundant repo prefix for a shorter name
+    repo = repo.delete_prefix("homebrew-")
     blob_url = "#{GitHubPackages::URL_PREFIX}#{org}/#{repo}/#{name}/blobs/sha256:#{checksum}"
     curl_download(blob_url, "--header", "Authorization: Bearer", to: temporary_path)
   end

Library/Homebrew/github_packages.rb

@@ -46,7 +46,6 @@ class GitHubPackages
       skopeo = Formula["skopeo"].opt_bin/"skopeo"
     end
 
-    # TODO: these dependencies are installed but cannot be required automatically.
     Homebrew.install_gem!("json_schemer")
     require "json_schemer"
 
@@ -147,8 +146,8 @@ class GitHubPackages
     source = "https://github.com/#{org}/#{repo}/blob/#{git_revision}/#{git_path}"
     documentation = if formula.tap.core_tap?
       "https://formulae.brew.sh/formula/#{formula_name}"
-    else
+    elsif (remote = formula.tap.remote) && remote.start_with?("https://github.com/")
-      formula.tap.remote
+      remote
     end
 
     formula_annotations_hash = {