diff --git a/lib/modules/datasource/nuget/v3.ts b/lib/modules/datasource/nuget/v3.ts
index b2b77cf7bdcf46aef60ccd30268daf12cd3273e8..2c760a9f444aaeca457d55e32f04597bcb5c232a 100644
--- a/lib/modules/datasource/nuget/v3.ts
+++ b/lib/modules/datasource/nuget/v3.ts
@@ -35,10 +35,10 @@ export async function getResourceUrl(
   if (cachedResult) {
     return cachedResult;
   }
-
+  let servicesIndexRaw: ServicesIndexRaw | undefined;
   try {
     const responseCacheKey = url;
-    let servicesIndexRaw = await packageCache.get<ServicesIndexRaw>(
+    servicesIndexRaw = await packageCache.get<ServicesIndexRaw>(
       cacheNamespace,
       responseCacheKey
     );
@@ -90,7 +90,7 @@ export async function getResourceUrl(
       throw err;
     }
     logger.debug(
-      { err, url },
+      { err, url, servicesIndexRaw },
       `nuget registry failure: can't get ${resourceType}`
     );
     return null;