diff --git a/resources/sql/autopatches/20180306.opath.01.digest.sql b/resources/sql/autopatches/20180306.opath.01.digest.sql
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20180306.opath.01.digest.sql
@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_owners.owners_path
+  ADD pathIndex BINARY(12) NOT NULL;
diff --git a/resources/sql/autopatches/20180306.opath.02.digestpopulate.php b/resources/sql/autopatches/20180306.opath.02.digestpopulate.php
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20180306.opath.02.digestpopulate.php
@@ -0,0 +1,19 @@
+<?php
+
+$table = new PhabricatorOwnersPath();
+$conn = $table->establishConnection('w');
+
+foreach (new LiskMigrationIterator($table) as $path) {
+  $index = PhabricatorHash::digestForIndex($path->getPath());
+
+  if ($index === $path->getPathIndex()) {
+    continue;
+  }
+
+  queryfx(
+    $conn,
+    'UPDATE %T SET pathIndex = %s WHERE id = %d',
+    $table->getTableName(),
+    $index,
+    $path->getID());
+}
diff --git a/src/applications/owners/storage/PhabricatorOwnersPath.php b/src/applications/owners/storage/PhabricatorOwnersPath.php
--- a/src/applications/owners/storage/PhabricatorOwnersPath.php
+++ b/src/applications/owners/storage/PhabricatorOwnersPath.php
@@ -4,6 +4,7 @@
 
   protected $packageID;
   protected $repositoryPHID;
+  protected $pathIndex;
   protected $path;
   protected $excluded;
 
@@ -15,6 +16,7 @@
       self::CONFIG_TIMESTAMPS => false,
       self::CONFIG_COLUMN_SCHEMA => array(
         'path' => 'text255',
+        'pathIndex' => 'bytes12',
         'excluded' => 'bool',
       ),
       self::CONFIG_KEY_SCHEMA => array(
@@ -25,12 +27,17 @@
     ) + parent::getConfiguration();
   }
 
-
   public static function newFromRef(array $ref) {
     $path = new PhabricatorOwnersPath();
     $path->repositoryPHID = $ref['repositoryPHID'];
-    $path->path = $ref['path'];
+
+    $raw_path = $ref['path'];
+
+    $path->pathIndex = PhabricatorHash::digestForIndex($raw_path);
+    $path->path = $raw_path;
+
     $path->excluded = $ref['excluded'];
+
     return $path;
   }