Pin microsoft.netcore.app.ref to 3.0.0

Author: wtgodbe

eng/Version.Details.xml

@@ -41,10 +41,6 @@
       <Uri>https://github.com/aspnet/Extensions</Uri>
       <Sha>1a34885e2800a7b387e006a12d72a5a19febf922</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App.Ref" Version="3.0.1" CoherentParentDependency="Microsoft.Extensions.Logging">
-      <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>d34d1570bfdf669ed94b4c939b2f39a1650e2320</Sha>
-    </Dependency>
     <Dependency Name="Microsoft.NETCore.App.Runtime.win-x64" Version="3.0.1" CoherentParentDependency="Microsoft.Extensions.Logging">
       <Uri>https://github.com/dotnet/core-setup</Uri>
       <Sha>d34d1570bfdf669ed94b4c939b2f39a1650e2320</Sha>
@@ -65,6 +61,11 @@
       <Uri>https://github.com/dotnet/corefx</Uri>
       <Sha>4ac4c0367003fe3973a3648eb0715ddb0e3bbcea</Sha>
     </Dependency>
+    <!-- Keep this dependency at the bottom of ProductDependencies, else it will be picked as the parent for CoherentParentDependencies -->
+    <Dependency Name="Microsoft.NETCore.App.Ref" Version="3.0.0" Pinned="true">
+      <Uri>https://github.com/dotnet/core-setup</Uri>
+      <Sha>7d57652f33493fa022125b7f63aad0d70c52d810</Sha>
+    </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
     <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19474.3">

eng/Versions.props

@@ -49,7 +49,7 @@
   <PropertyGroup Label="Dependencies from dotnet/core-setup">
     <MicrosoftDotNetPlatformAbstractionsPackageVersion>3.0.1</MicrosoftDotNetPlatformAbstractionsPackageVersion>
     <MicrosoftExtensionsDependencyModelPackageVersion>3.0.1</MicrosoftExtensionsDependencyModelPackageVersion>
-    <MicrosoftNETCoreAppRefPackageVersion>3.0.1</MicrosoftNETCoreAppRefPackageVersion>
+    <MicrosoftNETCoreAppRefPackageVersion>3.0.0</MicrosoftNETCoreAppRefPackageVersion>
     <MicrosoftNETCoreAppRuntimewinx64PackageVersion>3.0.1</MicrosoftNETCoreAppRuntimewinx64PackageVersion>
     <NETStandardLibraryRefPackageVersion>2.1.0</NETStandardLibraryRefPackageVersion>
   </PropertyGroup>