diff --git a/lib/platform/github/index.ts b/lib/platform/github/index.ts
index f381b27a2ea2fe..5685f8b249538b 100644
--- a/lib/platform/github/index.ts
+++ b/lib/platform/github/index.ts
@@ -66,6 +66,7 @@ import {
   GhRepo,
   GhRestPr,
   LocalRepoConfig,
+  PlatformConfig,
   PrList,
 } from './types';
 import { UserDetails, getUserDetails, getUserEmail } from './user';
@@ -74,7 +75,7 @@ const githubApi = new githubHttp.GithubHttp();
 
 let config: LocalRepoConfig = {} as any;
 
-const platformConfig = {
+const platformConfig: PlatformConfig = {
   hostType: PlatformId.Github,
   endpoint: 'https://api.github.com/',
 };
@@ -82,6 +83,21 @@ const platformConfig = {
 const escapeHash = (input: string): string =>
   input ? input.replace(regEx(/#/g), '%23') : input;
 
+export async function detectGhe(token: string): Promise<void> {
+  platformConfig.isGhe =
+    URL.parse(platformConfig.endpoint).host !== 'api.github.com';
+  if (platformConfig.isGhe) {
+    const gheHeaderKey = 'x-github-enterprise-version';
+    const gheQueryRes = await githubApi.headJson('/', { token });
+    const gheHeaders: Record<string, string> = gheQueryRes?.headers || {};
+    const [, gheVersion] =
+      Object.entries(gheHeaders).find(
+        ([k]) => k.toLowerCase() === gheHeaderKey
+      ) ?? [];
+    platformConfig.gheVersion = semverValid(gheVersion) ?? null;
+  }
+}
+
 export async function initPlatform({
   endpoint,
   token,
@@ -99,17 +115,7 @@ export async function initPlatform({
     logger.debug('Using default github endpoint: ' + platformConfig.endpoint);
   }
 
-  config.isGhe = URL.parse(platformConfig.endpoint).host !== 'api.github.com';
-  if (config.isGhe) {
-    const gheHeaderKey = 'x-github-enterprise-version';
-    const gheQueryRes = await githubApi.head('/', { throwHttpErrors: false });
-    const gheHeaders: Record<string, string> = gheQueryRes?.headers || {};
-    const [, gheVersion] =
-      Object.entries(gheHeaders).find(
-        ([k]) => k.toLowerCase() === gheHeaderKey
-      ) ?? [];
-    config.gheVersion = semverValid(gheVersion) ?? null;
-  }
+  await detectGhe(token);
 
   let userDetails: UserDetails;
   let renovateUsername: string;
@@ -127,7 +133,7 @@ export async function initPlatform({
       discoveredGitAuthor = `${userDetails.name} <${userEmail}>`;
     }
   }
-  logger.debug('Authenticated as GitHub user: ' + renovateUsername);
+  logger.debug({ platformConfig, renovateUsername }, 'Platform config');
   const platformResult: PlatformResult = {
     endpoint: platformConfig.endpoint,
     gitAuthor: gitAuthor || discoveredGitAuthor,
@@ -205,8 +211,6 @@ export async function initRepo({
     repository,
     cloneSubmodules,
     ignorePrAuthor,
-    isGhe: config.isGhe,
-    gheVersion: config.gheVersion,
   } as any;
   // istanbul ignore if
   if (endpoint) {
@@ -225,7 +229,7 @@ export async function initRepo({
   try {
     let infoQuery = repoInfoQuery;
 
-    if (config.isGhe) {
+    if (platformConfig.isGhe) {
       infoQuery = infoQuery.replace(/\n\s*autoMergeAllowed\s*\n/, '\n');
       infoQuery = infoQuery.replace(/\n\s*hasIssuesEnabled\s*\n/, '\n');
     }
@@ -1653,7 +1657,7 @@ export async function mergePr({
 }
 
 export function massageMarkdown(input: string): string {
-  if (config.isGhe) {
+  if (platformConfig.isGhe) {
     return smartTruncate(input, 60000);
   }
   const massagedInput = massageMarkdownLinks(input)
diff --git a/lib/platform/github/types.ts b/lib/platform/github/types.ts
index 33d2e3e8aeb033..296e589e54f2a1 100644
--- a/lib/platform/github/types.ts
+++ b/lib/platform/github/types.ts
@@ -54,6 +54,13 @@ export interface GhGraphQlPr extends GhPr {
   labels: string[] & { nodes?: { name: string }[] };
 }
 
+export interface PlatformConfig {
+  hostType: string;
+  endpoint: string;
+  isGhe?: boolean;
+  gheVersion?: string | null;
+}
+
 export interface LocalRepoConfig {
   repositoryName: string;
   pushProtection: boolean;
@@ -70,8 +77,6 @@ export interface LocalRepoConfig {
   defaultBranch: string;
   repositoryOwner: string;
   repository: string | null;
-  isGhe: boolean;
-  gheVersion?: string | null;
   renovateUsername: string;
   productLinks: any;
   ignorePrAuthor: boolean;