diff --git a/modulekit.php b/modulekit.php
index 52af002a..168eb2e7 100644
--- a/modulekit.php
+++ b/modulekit.php
@@ -16,6 +16,7 @@ $include = array(
     'src/ip-location.php',
     'src/wikipedia.php',
     'src/ImageLoader.php',
+    'src/RepositoryBase.php',
     'src/RepositoryDir.php',
     'src/RepositoryGit.php',
     'src/repositories.php',
diff --git a/src/RepositoryBase.php b/src/RepositoryBase.php
new file mode 100644
index 00000000..1ec18876
--- /dev/null
+++ b/src/RepositoryBase.php
@@ -0,0 +1,32 @@
+<?php
+class RepositoryBase {
+  function __construct ($id, $def) {
+    $this->def = $def;
+    $this->path = $def['path'];
+  }
+
+  function timestamp () {
+    return null;
+  }
+
+  function info () {
+    $ret = array();
+
+    foreach (array('name') as $k) {
+      if (array_key_exists($k, $this->def)) {
+        $ret[$k] = $this->def[$k];
+      }
+    }
+
+    $ret['timestamp'] = Date(DATE_ISO8601, $this->timestamp());
+
+    return $ret;
+  }
+
+  function data () {
+    $data = array(
+      'categories' => array(),
+      'timestamp' => Date(DATE_ISO8601, $this->timestamp()),
+    );
+  }
+}
diff --git a/src/RepositoryDir.php b/src/RepositoryDir.php
index 1e436718..afda1937 100644
--- a/src/RepositoryDir.php
+++ b/src/RepositoryDir.php
@@ -1,24 +1,5 @@
 <?php
-class RepositoryDir {
-  function __construct ($id, $def) {
-    $this->def = $def;
-    $this->path = $def['path'];
-  }
-
-  function info () {
-    $ret = array();
-
-    foreach (array('name') as $k) {
-      if (array_key_exists($k, $this->def)) {
-        $ret[$k] = $this->def[$k];
-      }
-    }
-
-    $ret['timestamp'] = Date(DATE_ISO8601, $this->timestamp());
-
-    return $ret;
-  }
-
+class RepositoryDir extends RepositoryBase {
   function timestamp () {
     $ts = 0;
     $d = opendir($this->path);
@@ -34,10 +15,7 @@ class RepositoryDir {
   }
 
   function data () {
-    $data = array(
-      'categories' => array(),
-      'timestamp' => Date(DATE_ISO8601, $this->timestamp()),
-    );
+    $data = parent::data();
 
     $d = opendir($this->path);
     while ($f = readdir($d)) {
diff --git a/src/RepositoryGit.php b/src/RepositoryGit.php
index 10f67eac..3d4f0f70 100644
--- a/src/RepositoryGit.php
+++ b/src/RepositoryGit.php
@@ -1,24 +1,5 @@
 <?php
-class RepositoryGit {
-  function __construct ($id, $def) {
-    $this->def = $def;
-    $this->path = $def['path'];
-  }
-
-  function info () {
-    $ret = array();
-
-    foreach (array('name') as $k) {
-      if (array_key_exists($k, $this->def)) {
-        $ret[$k] = $this->def[$k];
-      }
-    }
-
-    $ret['timestamp'] = Date(DATE_ISO8601, $this->timestamp());
-
-    return $ret;
-  }
-
+class RepositoryGit extends RepositoryBase {
   function timestamp () {
     $ts = (int)shell_exec("cd " . escapeShellArg($this->path) . "; git log -1 --pretty=format:%ct");
 
@@ -26,10 +7,7 @@ class RepositoryGit {
   }
 
   function data () {
-    $data = array(
-      'categories' => array(),
-      'timestamp' => Date(DATE_ISO8601, $this->timestamp()),
-    );
+    $data = parent::data();
 
     $d = popen("cd " . escapeShellArg($this->path) . "; git ls-tree HEAD", "r");
     while ($r = fgets($d)) {