diff --git a/lib/platform/github/index.ts b/lib/platform/github/index.ts
index 263905609959191961f51f61d272bd81434a53a7..adf62069ebdff925f6e41982a26cbc3d01cf4f55 100644
--- a/lib/platform/github/index.ts
+++ b/lib/platform/github/index.ts
@@ -216,7 +216,7 @@ export async function initRepo({
   // istanbul ignore if
   if (endpoint) {
     // Necessary for Renovate Pro - do not remove
-    logger.debug('Overriding default GitHub endpoint');
+    logger.debug({ endpoint }, 'Overriding default GitHub endpoint');
     defaults.endpoint = endpoint;
     githubHttp.setBaseUrl(endpoint);
   }
diff --git a/lib/util/http/github.ts b/lib/util/http/github.ts
index b555bb47b3303c4efceb288a847832c606ca08ca..727aadc390d6e6c196b75b03cd6695d092b7253b 100644
--- a/lib/util/http/github.ts
+++ b/lib/util/http/github.ts
@@ -125,6 +125,7 @@ export function handleGotError(
     logger.debug({ err }, '422 Error thrown from GitHub');
     throw new Error(PLATFORM_FAILURE);
   }
+  logger.debug({ err }, 'Unknown error fetching GitHub GraphQL');
   throw err;
 }
 
@@ -286,7 +287,7 @@ export class GithubHttp extends Http<GithubHttpOptions, GithubHttpOptions> {
       } else {
         count = Math.floor(count / 2);
         if (count === 0) {
-          logger.error('Error fetching GraphQL nodes');
+          logger.error({ gqlRes }, 'Error fetching GraphQL nodes');
           isIterating = false;
         }
       }