diff --git a/hook/hook.php b/hook/hook.php
new file mode 100644
index 0000000..9d7e2c3
--- /dev/null
+++ b/hook/hook.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace sammo\img_service;
+
+include(__DIR__.'/gogs_key.php');
+
+$raw_payload = $_POST['payload']??'false';
+$valid_hmac = $_SERVER['HTTP_X_GOGS_SIGNATURE']??'';
+$req_hmac = hash_hmac('sha256', $raw_payload, Key::KEY);
+
+if($valid_hmac != $req_hmac){
+    die('');
+}
+
+exec("git pull -q 2>&1", $output);
\ No newline at end of file