--- a/rhodecode/lib/dbmigrate/schema/db_1_5_2.py	Sun Apr 07 19:14:17 2013 +0200
+++ b/rhodecode/lib/dbmigrate/schema/db_1_5_2.py	Sun Apr 07 23:51:53 2013 +0200
@@ -44,6 +44,7 @@
 from rhodecode.lib.vcs.utils.helpers import get_scm
 from rhodecode.lib.vcs.exceptions import VCSError
 from rhodecode.lib.vcs.utils.lazy import LazyProperty
+from rhodecode.lib.vcs.backends.base import EmptyChangeset
 
 from rhodecode.lib.utils2 import str2bool, safe_str, get_changeset_safe, \
     safe_unicode, remove_suffix, remove_prefix
@@ -979,17 +980,27 @@
         """
         from rhodecode.lib.vcs.backends.base import BaseChangeset
         if cs_cache is None:
-            cs_cache = self.get_changeset()
+            cs_cache = EmptyChangeset()
+            # use no-cache version here
+            scm_repo = self.scm_instance_no_cache()
+            if scm_repo:
+                cs_cache = scm_repo.get_changeset()
+
         if isinstance(cs_cache, BaseChangeset):
             cs_cache = cs_cache.__json__()
 
-        if cs_cache != self.changeset_cache:
-            last_change = cs_cache.get('date') or self.last_change
-            log.debug('updated repo %s with new cs cache %s' % (self, cs_cache))
+        if (cs_cache != self.changeset_cache or not self.changeset_cache):
+            _default = datetime.datetime.fromtimestamp(0)
+            last_change = cs_cache.get('date') or _default
+            log.debug('updated repo %s with new cs cache %s'
+                      % (self.repo_name, cs_cache))
             self.updated_on = last_change
             self.changeset_cache = cs_cache
             Session().add(self)
             Session().commit()
+        else:
+            log.debug('Skipping repo:%s already with latest changes'
+                      % self.repo_name)
 
     @property
     def tip(self):
@@ -1065,6 +1076,9 @@
         """
         CacheInvalidation.set_invalidate(repo_name=self.repo_name)
 
+    def scm_instance_no_cache(self):
+        return self.__get_instance()
+
     @LazyProperty
     def scm_instance(self):
         import rhodecode