From 905c3394c4d581e41624d2091194ed2b04a8905c Mon Sep 17 00:00:00 2001
From: Nayan Shah <nashah@microsoft.com>
Date: Fri, 13 Feb 2026 07:52:29 -0800
Subject: [PATCH 1/3] Allow custom npm registry URL for .NET SDK

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 dotnet/src/build/GitHub.Copilot.SDK.targets | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dotnet/src/build/GitHub.Copilot.SDK.targets b/dotnet/src/build/GitHub.Copilot.SDK.targets
index 20afd815..f9421ecf 100644
--- a/dotnet/src/build/GitHub.Copilot.SDK.targets
+++ b/dotnet/src/build/GitHub.Copilot.SDK.targets
@@ -26,6 +26,11 @@
     <_CopilotBinary Condition="'$(_CopilotBinary)' == ''">copilot</_CopilotBinary>
   </PropertyGroup>
 
+  <!-- Allow customization of npm registry URL via project property -->
+  <PropertyGroup>
+    <CopilotNpmRegistryUrl Condition="'$(CopilotNpmRegistryUrl)' == ''">https://registry.npmjs.org</CopilotNpmRegistryUrl>
+  </PropertyGroup>
+
   <!-- Download and extract CLI binary -->
   <Target Name="_DownloadCopilotCli" BeforeTargets="BeforeBuild" Condition="'$(_CopilotPlatform)' != ''">
     <Error Condition="'$(CopilotCliVersion)' == ''" Text="CopilotCliVersion is not set. The GitHub.Copilot.SDK.props file may be missing from the NuGet package." />
@@ -35,7 +40,7 @@
       <_CopilotCacheDir>$(IntermediateOutputPath)copilot-cli\$(CopilotCliVersion)\$(_CopilotPlatform)</_CopilotCacheDir>
       <_CopilotCliBinaryPath>$(_CopilotCacheDir)\$(_CopilotBinary)</_CopilotCliBinaryPath>
       <_CopilotArchivePath>$(_CopilotCacheDir)\copilot.tgz</_CopilotArchivePath>
-      <_CopilotDownloadUrl>https://registry.npmjs.org/@github/copilot-$(_CopilotPlatform)/-/copilot-$(_CopilotPlatform)-$(CopilotCliVersion).tgz</_CopilotDownloadUrl>
+      <_CopilotDownloadUrl>$(CopilotNpmRegistryUrl)/@github/copilot-$(_CopilotPlatform)/-/copilot-$(_CopilotPlatform)-$(CopilotCliVersion).tgz</_CopilotDownloadUrl>
     </PropertyGroup>
 
     <!-- Delete archive if binary missing (handles partial/corrupted downloads) -->

From 7d74afbd596128a2be64fb527b6d9ac46e856044 Mon Sep 17 00:00:00 2001
From: Nayan Shah <196625+nayanshah@users.noreply.github.com>
Date: Fri, 13 Feb 2026 08:02:31 -0800
Subject: [PATCH 2/3] Update dotnet/src/build/GitHub.Copilot.SDK.targets

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 dotnet/src/build/GitHub.Copilot.SDK.targets | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dotnet/src/build/GitHub.Copilot.SDK.targets b/dotnet/src/build/GitHub.Copilot.SDK.targets
index f9421ecf..daa86aa9 100644
--- a/dotnet/src/build/GitHub.Copilot.SDK.targets
+++ b/dotnet/src/build/GitHub.Copilot.SDK.targets
@@ -40,7 +40,8 @@
       <_CopilotCacheDir>$(IntermediateOutputPath)copilot-cli\$(CopilotCliVersion)\$(_CopilotPlatform)</_CopilotCacheDir>
       <_CopilotCliBinaryPath>$(_CopilotCacheDir)\$(_CopilotBinary)</_CopilotCliBinaryPath>
       <_CopilotArchivePath>$(_CopilotCacheDir)\copilot.tgz</_CopilotArchivePath>
-      <_CopilotDownloadUrl>$(CopilotNpmRegistryUrl)/@github/copilot-$(_CopilotPlatform)/-/copilot-$(_CopilotPlatform)-$(CopilotCliVersion).tgz</_CopilotDownloadUrl>
+      <_CopilotNormalizedRegistryUrl>$([System.String]::Copy('$(CopilotNpmRegistryUrl)').TrimEnd('/'))</_CopilotNormalizedRegistryUrl>
+      <_CopilotDownloadUrl>$(_CopilotNormalizedRegistryUrl)/@github/copilot-$(_CopilotPlatform)/-/copilot-$(_CopilotPlatform)-$(CopilotCliVersion).tgz</_CopilotDownloadUrl>
     </PropertyGroup>
 
     <!-- Delete archive if binary missing (handles partial/corrupted downloads) -->

From 91563bed0885f54ed9ef822be278f07db64453fe Mon Sep 17 00:00:00 2001
From: Nayan Shah <196625+nayanshah@users.noreply.github.com>
Date: Fri, 13 Feb 2026 08:02:57 -0800
Subject: [PATCH 3/3] Update dotnet/src/build/GitHub.Copilot.SDK.targets

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 dotnet/src/build/GitHub.Copilot.SDK.targets | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dotnet/src/build/GitHub.Copilot.SDK.targets b/dotnet/src/build/GitHub.Copilot.SDK.targets
index daa86aa9..9317591c 100644
--- a/dotnet/src/build/GitHub.Copilot.SDK.targets
+++ b/dotnet/src/build/GitHub.Copilot.SDK.targets
@@ -26,7 +26,13 @@
     <_CopilotBinary Condition="'$(_CopilotBinary)' == ''">copilot</_CopilotBinary>
   </PropertyGroup>
 
-  <!-- Allow customization of npm registry URL via project property -->
+  <!-- Allow customization of the npm registry URL used to download the Copilot CLI.
+       This is primarily for organizations using private or mirrored npm registries.
+       Set CopilotNpmRegistryUrl in your .csproj or Directory.Build.props, for example:
+       <PropertyGroup>
+         <CopilotNpmRegistryUrl>https://your-private-registry.example.com</CopilotNpmRegistryUrl>
+       </PropertyGroup>
+       If not set, this defaults to https://registry.npmjs.org. -->
   <PropertyGroup>
     <CopilotNpmRegistryUrl Condition="'$(CopilotNpmRegistryUrl)' == ''">https://registry.npmjs.org</CopilotNpmRegistryUrl>
   </PropertyGroup>