A statement about replacement objects (#364)

Author: Byron

git-odb/src/store_impls/dynamic/find.rs

@@ -419,7 +419,7 @@ where
             "BUG: handle must be configured to `prevent_pack_unload()` before using this method"
         );
 
-        assert!(self.store_ref().replacements.is_empty() || self.ignore_replacements, "TODO: It's unclear right now how replacements tie into packs - turn it off or make sure we do the right thing");
+        assert!(self.store_ref().replacements.is_empty() || self.ignore_replacements, "Everything related to packing must not use replacements. These are not used here, but it should be turned off for good measure.");
 
         let id = id.as_ref();
         let mut snapshot = self.snapshot.borrow_mut();