diff --git a/lib/main.js b/lib/main.js
index 3638166..ec0cbf0 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -56,21 +56,20 @@ function run() {
             ]);
             let gitURL = String('https://');
             if (process.env['GITHUB_PAT']) {
-                gitURL.concat(process.env['GITHUB_PAT']);
+                gitURL = gitURL.concat(process.env['GITHUB_PAT']);
             }
             else if (process.env['GITHUB_TOKEN']) {
-                gitURL.concat('x-access-token:', process.env['GITHUB_TOKEN']);
+                gitURL = gitURL.concat('x-access-token:', process.env['GITHUB_TOKEN']);
             }
             else {
                 core.setFailed('❌️ You have to provide a GITHUB_TOKEN or GITHUB_PAT');
                 return;
             }
-            gitURL.concat('@github.com/', repo, '.git');
             yield exec.exec('git', [
                 'push',
                 '--force',
                 '--quiet',
-                gitURL,
+                gitURL.concat('@github.com/', repo, '.git'),
                 `master:${target_branch}`
             ]);
             process.chdir(process.env['GITHUB_WORKSPACE'] || '.');
diff --git a/src/main.ts b/src/main.ts
index 2d7e06f..98f521d 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -46,19 +46,18 @@ async function run() {
 
     let gitURL = String('https://');
     if (process.env['GITHUB_PAT']) {
-      gitURL.concat(process.env['GITHUB_PAT']);
+      gitURL = gitURL.concat(process.env['GITHUB_PAT']);
     } else if (process.env['GITHUB_TOKEN']) {
-      gitURL.concat('x-access-token:', process.env['GITHUB_TOKEN']);
+      gitURL = gitURL.concat('x-access-token:', process.env['GITHUB_TOKEN']);
     } else {
       core.setFailed('❌️ You have to provide a GITHUB_TOKEN or GITHUB_PAT');
       return;
     }
-    gitURL.concat('@github.com/', repo, '.git');
     await exec.exec('git', [
       'push',
       '--force',
       '--quiet',
-      gitURL,
+      gitURL.concat('@github.com/', repo, '.git'),
       `master:${target_branch}`
     ]);