diff --git a/src/SourceBuild/content/Directory.Build.props b/src/SourceBuild/content/Directory.Build.props
index c770efa5f..52b3c75b9 100644
--- a/src/SourceBuild/content/Directory.Build.props
+++ b/src/SourceBuild/content/Directory.Build.props
@@ -173,12 +173,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <!-- known-good (repos/known-good.proj) conditionally includes submodules based on the platform,
-         so this will not always correspond to the same repos - see that file for details.
-         We need an "empty" project after the last real project in order for prebuilt detection
-         to work, so we always build known-good. -->
-    <RootRepo>known-good</RootRepo>
-    <RootRepoTests>known-good-tests</RootRepoTests>
+    <RootRepo>dotnet</RootRepo>
   </PropertyGroup>
 
   <!--
diff --git a/src/SourceBuild/content/build.proj b/src/SourceBuild/content/build.proj
index fc07a63b9..2504bca53 100644
--- a/src/SourceBuild/content/build.proj
+++ b/src/SourceBuild/content/build.proj
@@ -13,13 +13,6 @@
     <MSBuild Projects="$(RepoProjectsDir)$(RootRepo).proj" Targets="Build" BuildInParallel="$(BuildInParallel)" StopOnFirstFailure="true" />
   </Target>
 
-  <Target Name="RunRepoTests" DependsOnTargets="PrepareOutput;InitBuild">
-    <Message Text="Build Environment: $(Platform) $(Configuration) $(TargetOS) $(TargetRid)" />
-
-    <MSBuild Projects="$(RepoProjectsDir)$(RootRepoTests).proj" Targets="Build" Properties="PrepForTests=true;SkipEnsurePackagesCreated=true" BuildInParallel="$(BuildInParallel)" StopOnFirstFailure="true" />
-    <MSBuild Projects="$(RepoProjectsDir)$(RootRepoTests).proj" Targets="Build" Properties="RunTests=true;SkipEnsurePackagesCreated=true" BuildInParallel="$(BuildInParallel)" StopOnFirstFailure="true" />
-  </Target>
-
   <Target Name="PrepareOutput">
     <MakeDir Directories="$(OutputPath)" />
     <MakeDir Directories="$(LoggingDir)" />
diff --git a/src/SourceBuild/content/eng/tools/generate-graphviz/generate-graphviz.proj b/src/SourceBuild/content/eng/tools/generate-graphviz/generate-graphviz.proj
index 98e292173..b49ac62e6 100644
--- a/src/SourceBuild/content/eng/tools/generate-graphviz/generate-graphviz.proj
+++ b/src/SourceBuild/content/eng/tools/generate-graphviz/generate-graphviz.proj
@@ -5,9 +5,7 @@
     <ItemGroup>
       <AllRepoProjects
         Include="$(ProjectDir)repo-projects\*.proj"
-        Exclude="
-          $(ProjectDir)repo-projects\known-good.proj;
-          $(ProjectDir)repo-projects\known-good-tests.proj" />
+        Exclude="$(ProjectDir)repo-projects\dotnet.proj" />
     </ItemGroup>
 
     <MSBuild
diff --git a/src/SourceBuild/content/repo-projects/dotnet.proj b/src/SourceBuild/content/repo-projects/dotnet.proj
new file mode 100644
index 000000000..9ffb63179
--- /dev/null
+++ b/src/SourceBuild/content/repo-projects/dotnet.proj
@@ -0,0 +1,52 @@
+<Project>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
+
+  <PropertyGroup>
+    <RepoApiImplemented>false</RepoApiImplemented>
+    <SkipEnsurePackagesCreated>true</SkipEnsurePackagesCreated>
+  </PropertyGroup>
+
+  <!-- This project file serves a couple of purpose.
+       - We conditionally include repos based on what works on different platforms/configurations.
+       - We need an "empty" build after the last real repo for prebuilt detection to work - this is that file.
+       - If we have a repo that is not in sdk's dependency tree, we can still build it by including it here.  -->
+
+  <ItemGroup>
+    <!-- Toolsets -->
+    <RepositoryReference Include="source-build-reference-packages" />
+    <RepositoryReference Include="sourcelink" />
+    <RepositoryReference Include="arcade" />
+
+    <!-- Product Repos -->
+    <RepositoryReference Include="command-line-api" />
+    <RepositoryReference Include="diagnostics" />
+    <RepositoryReference Include="emsdk" />
+    <RepositoryReference Include="razor" />
+    <RepositoryReference Include="xliff-tasks" />
+    <RepositoryReference Include="runtime" />
+    <RepositoryReference Include="roslyn" />
+    <RepositoryReference Include="source-build-externals" />
+    <RepositoryReference Include="symreader" />
+    <RepositoryReference Include="xdt" />
+    <RepositoryReference Include="msbuild" />
+    <RepositoryReference Include="roslyn-analyzers" />
+    <RepositoryReference Include="aspnetcore" />
+    <RepositoryReference Include="deployment-tools" />
+    <RepositoryReference Include="format" />
+    <RepositoryReference Include="templating" />
+    <RepositoryReference Include="nuget-client" />
+    <RepositoryReference Include="test-templates" />
+    <RepositoryReference Include="fsharp" />
+    <RepositoryReference Include="sdk" />
+    <RepositoryReference Include="vstest" />
+    <RepositoryReference Include="installer" />
+
+    <!-- Package source-build artifacts -->
+    <RepositoryReference Include="package-source-build" />
+  </ItemGroup>
+
+  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
+
+  <Target Name="RepoBuild" />
+
+</Project>
diff --git a/src/SourceBuild/content/repo-projects/known-good-tests.proj b/src/SourceBuild/content/repo-projects/known-good-tests.proj
deleted file mode 100644
index e8d75dd4b..000000000
--- a/src/SourceBuild/content/repo-projects/known-good-tests.proj
+++ /dev/null
@@ -1,37 +0,0 @@
-<Project>
-  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
-
-  <PropertyGroup>
-    <RepoApiImplemented>false</RepoApiImplemented>
-    <SkipEnsurePackagesCreated>true</SkipEnsurePackagesCreated>
-  </PropertyGroup>
-
-  <!-- This project file includes only repos that are enabled for building and running tests in source-build.  -->
-  <!-- Windows and ARM builds don't support all repos, keep them separate for future conditioning. -->
-  <Choose>
-    <When Condition="'$(OS)' == 'Windows_NT'">
-      <ItemGroup>
-        <RepositoryReference Include="runtime" />
-      </ItemGroup>
-    </When>
-    <When Condition="$(Platform.Contains('arm'))">
-      <ItemGroup>
-        <RepositoryReference Include="runtime" />
-      </ItemGroup>
-    </When>
-    <Otherwise>
-      <ItemGroup>
-        <!-- List of repos currently enabled. -->
-
-        <RepositoryReference Include="runtime" />
-
-      </ItemGroup>
-    </Otherwise>
-  </Choose>
-
-  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
-
-  <Target Name="RepoBuild">
-  </Target>
-
-</Project>
diff --git a/src/SourceBuild/content/repo-projects/known-good.proj b/src/SourceBuild/content/repo-projects/known-good.proj
deleted file mode 100644
index f01c73302..000000000
--- a/src/SourceBuild/content/repo-projects/known-good.proj
+++ /dev/null
@@ -1,79 +0,0 @@
-<Project>
-  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
-
-  <PropertyGroup>
-    <RepoApiImplemented>false</RepoApiImplemented>
-    <SkipEnsurePackagesCreated>true</SkipEnsurePackagesCreated>
-  </PropertyGroup>
-
-  <!-- This project file serves a couple of purpose.
-       - We conditionally include repos based on what works on different platforms/configurations.
-       - We need an "empty" build after the last real repo for prebuilt detection to work - this is that file.
-       - If we have a repo that is not in core-sdk's dependency tree, we can still build it by including it here.  -->
-
-  <!-- Windows and ARM builds currently only work through core-setup -->
-  <Choose>
-    <When Condition="'$(OS)' == 'Windows_NT'">
-      <ItemGroup>
-        <RepositoryReference Include="runtime" />
-      </ItemGroup>
-    </When>
-    <!-- Originally used to capture arm platforms. Now with support, left as an extension point for bringing up new architectures in the future. -->
-    <When Condition="'true' == 'false'">
-      <ItemGroup>
-        <RepositoryReference Include="runtime" />
-      </ItemGroup>
-    </When>
-    <Otherwise>
-      <ItemGroup>
-        <!-- Toolsets -->
-        <RepositoryReference Include="source-build-reference-packages" />
-        <RepositoryReference Include="sourcelink" />
-        <RepositoryReference Include="arcade" />
-
-        <!-- Tier 1 -->
-        <RepositoryReference Include="command-line-api" />
-        <RepositoryReference Include="diagnostics" />
-        <RepositoryReference Include="emsdk" />
-        <RepositoryReference Include="razor" />
-        <RepositoryReference Include="xliff-tasks" />
-        <RepositoryReference Include="runtime" />
-        <RepositoryReference Include="roslyn" />
-        <RepositoryReference Include="source-build-externals" />
-        <RepositoryReference Include="symreader" />
-        <RepositoryReference Include="xdt" />
-
-        <!-- Tier 2 -->
-        <RepositoryReference Include="msbuild" />
-
-        <!-- Tier 3 -->
-        <RepositoryReference Include="roslyn-analyzers" />
-
-        <!-- Tier 4 -->
-        <RepositoryReference Include="aspnetcore" />
-        <RepositoryReference Include="deployment-tools" />
-        <RepositoryReference Include="format" />
-        <RepositoryReference Include="templating" />
-        <RepositoryReference Include="nuget-client" />
-        <RepositoryReference Include="test-templates" />
-
-        <!-- Tier 5 -->
-        <RepositoryReference Include="fsharp" />
-        <RepositoryReference Include="sdk" />
-        <RepositoryReference Include="vstest" />
-
-        <!-- Tier 6 -->
-        <RepositoryReference Include="installer" />
-
-        <!-- Package source-build artifacts -->
-        <RepositoryReference Include="package-source-build" />
-      </ItemGroup>
-    </Otherwise>
-  </Choose>
-
-  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
-
-  <Target Name="RepoBuild">
-  </Target>
-
-</Project>