unsigned mode;
        struct object_id oid;
 
-       if (get_tree_entry(commit->object.oid.hash, spec->path,
-                          oid.hash, &mode))
+       if (get_tree_entry(&commit->object.oid, spec->path, &oid, &mode))
                die("There is no path %s in the commit", spec->path);
        fill_filespec(spec, &oid, 1, mode);