Resolve delta refs when pulling into a MemoryRepo.

Fixes #256.

NEWS

@@ -17,6 +17,9 @@
   * Fix TypeError when fetching empty updates.
     (Hwee Miin Koh)
 
+  * Resolve delta refs when pulling into a MemoryRepo.
+    (Max Shawabkeh, #256)
+
  IMPROVEMENTS
 
   * New public method `Repo.reset_index`. (Jelmer Vernooij)

dulwich/object_store.py

@@ -745,7 +745,7 @@ class MemoryObjectStore(BaseObjectStore):
         def commit():
             p = PackData.from_file(BytesIO(f.getvalue()), f.tell())
             f.close()
-            for obj in PackInflater.for_pack_data(p):
+            for obj in PackInflater.for_pack_data(p, self.get_raw):
                 self._data[obj.id] = obj
         def abort():
             pass