diff --git a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/Microsoft.AspNetCore.SignalR.Client.TS.csproj b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/Microsoft.AspNetCore.SignalR.Client.TS.csproj
index ba189a2ea8..0e9da97897 100644
--- a/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/Microsoft.AspNetCore.SignalR.Client.TS.csproj
+++ b/client-ts/Microsoft.AspNetCore.SignalR.Client.TS/Microsoft.AspNetCore.SignalR.Client.TS.csproj
@@ -40,12 +40,17 @@
     <PropertyGroup>
       <ModuleVersion>@(ExecOutput)</ModuleVersion>
       <ModuleVersion Condition="'$(VersionSuffix)' != ''">$(ModuleVersion)-$(VersionSuffix)</ModuleVersion>
+      <IsGitRepository Condition="EXISTS('$(MSBuildThisFileDirectory)..\..\.git\HEAD')">true</IsGitRepository>
+      <IsGitRepository Condition="'$(IsGitRepository)'==''">false</IsGitRepository>
     </PropertyGroup>
     <Exec Command="npm version $(ModuleVersion)" WorkingDirectory="$(MSBuildThisFileDirectory).." Condition="'$(VersionSuffix)' != ''" />
     <Exec Command="npm pack" WorkingDirectory="$(MSBuildThisFileDirectory).." />
-    <Exec Command="git checkout HEAD -- $(MSBuildThisFileDirectory)../package.json" Condition="'$(VersionSuffix)' != ''" />
-    <Exec Command="git checkout HEAD -- $(MSBuildThisFileDirectory)../package-lock.json" Condition="'$(VersionSuffix)' != ''" />
-
+    <Exec
+      Command="git checkout HEAD -- $(MSBuildThisFileDirectory)../package.json"
+      Condition="$(IsGitRepository) AND '$(VersionSuffix)' != ''" />
+    <Exec
+      Command="git checkout HEAD -- $(MSBuildThisFileDirectory)../package-lock.json"
+      Condition="$(IsGitRepository) AND '$(VersionSuffix)' != ''" />
     <ItemGroup>
       <TSClient Include="$(MSBuildThisFileDirectory)../signalr-client*.tgz" />
     </ItemGroup>