diff --git a/dist/index.js b/dist/index.js
index fe3f317..6241dc1 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -167,13 +167,13 @@ class GitAuthHelper {
         this.settings = gitSourceSettings || {};
         // Token auth header
         const serverUrl = urlHelper.getServerUrl(this.settings.githubServerUrl);
-        this.tokenConfigKey = `http.${serverUrl.origin}/.extraheader`; // "origin" is SCHEME://HOSTNAME[:PORT]
+        this.tokenConfigKey = `http.${serverUrl.origin}${serverUrl.pathname}/.extraheader`; // "origin" is SCHEME://HOSTNAME[:PORT]
         const basicCredential = Buffer.from(`x-access-token:${this.settings.authToken}`, 'utf8').toString('base64');
         core.setSecret(basicCredential);
         this.tokenPlaceholderConfigValue = `AUTHORIZATION: basic ***`;
         this.tokenConfigValue = `AUTHORIZATION: basic ${basicCredential}`;
         // Instead of SSH URL
-        this.insteadOfKey = `url.${serverUrl.origin}/.insteadOf`; // "origin" is SCHEME://HOSTNAME[:PORT]
+        this.insteadOfKey = `url.${serverUrl.origin}${serverUrl.pathname}/.insteadOf`; // "origin" is SCHEME://HOSTNAME[:PORT]
         this.insteadOfValues.push(`git@${serverUrl.hostname}:`);
         if (this.settings.workflowOrganizationId) {
             this.insteadOfValues.push(`org-${this.settings.workflowOrganizationId}@github.com:`);
@@ -2731,7 +2731,7 @@ function getFetchUrl(settings) {
         return `${user}@${serviceUrl.hostname}:${encodedOwner}/${encodedName}.git`;
     }
     // "origin" is SCHEME://HOSTNAME[:PORT]
-    return `${serviceUrl.origin}/${encodedOwner}/${encodedName}`;
+    return `${serviceUrl.origin}${serviceUrl.pathname}/${encodedOwner}/${encodedName}`;
 }
 function getServerUrl(url) {
     let resolvedUrl = process.env['GITHUB_SERVER_URL'] || 'https://github.com';
@@ -38511,4 +38511,4 @@ module.exports = parseParams
 /******/ 	module.exports = __webpack_exports__;
 /******/ 	
 /******/ })()
-;
\ No newline at end of file
+;
diff --git a/src/git-auth-helper.ts b/src/git-auth-helper.ts
index e67db14..e95ab7e 100644
--- a/src/git-auth-helper.ts
+++ b/src/git-auth-helper.ts
@@ -54,7 +54,7 @@ class GitAuthHelper {
 
     // Token auth header
     const serverUrl = urlHelper.getServerUrl(this.settings.githubServerUrl)
-    this.tokenConfigKey = `http.${serverUrl.origin}/.extraheader` // "origin" is SCHEME://HOSTNAME[:PORT]
+    this.tokenConfigKey = `http.${serverUrl.origin}${serverUrl.pathname}/.extraheader` // "origin" is SCHEME://HOSTNAME[:PORT]
     const basicCredential = Buffer.from(
       `x-access-token:${this.settings.authToken}`,
       'utf8'
@@ -64,7 +64,7 @@ class GitAuthHelper {
     this.tokenConfigValue = `AUTHORIZATION: basic ${basicCredential}`
 
     // Instead of SSH URL
-    this.insteadOfKey = `url.${serverUrl.origin}/.insteadOf` // "origin" is SCHEME://HOSTNAME[:PORT]
+    this.insteadOfKey = `url.${serverUrl.origin}${serverUrl.pathname}/.insteadOf` // "origin" is SCHEME://HOSTNAME[:PORT]
     this.insteadOfValues.push(`git@${serverUrl.hostname}:`)
     if (this.settings.workflowOrganizationId) {
       this.insteadOfValues.push(
diff --git a/src/url-helper.ts b/src/url-helper.ts
index 17a0842..4753693 100644
--- a/src/url-helper.ts
+++ b/src/url-helper.ts
@@ -17,7 +17,7 @@ export function getFetchUrl(settings: IGitSourceSettings): string {
   }
 
   // "origin" is SCHEME://HOSTNAME[:PORT]
-  return `${serviceUrl.origin}/${encodedOwner}/${encodedName}`
+  return `${serviceUrl.origin}${serviceUrl.pathname}/${encodedOwner}/${encodedName}`
 }
 
 export function getServerUrl(url?: string): URL {