works better when you restore the package you want to use...

build/pipelines/templates/pgo-build-and-publish-nuget-job.yml

@@ -30,6 +30,17 @@ jobs:
     inputs:
       versionSpec: 5.8.0
 
+  # In the Microsoft Azure DevOps tenant, NuGetCommand is ambiguous.
+  # This should be `task: NuGetCommand@2`
+  - task: 333b11bd-d341-40d9-afcf-b32d5ce6f23b@2
+    displayName: Restore NuGet packages for extraneous build actions
+    inputs:
+      command: restore
+      feedsToUse: config
+      configPath: NuGet.config
+      restoreSolution: build/packages.config
+      restoreDirectory: '$(Build.SourcesDirectory)\packages'
+
   - task: MSBuild@1
     displayName: 'Create PGO Nuget'
     inputs: