596                 # Collect into an intermediate list to avoid a `RuntimeError`

   596                 copies = self._map.setparents_fixup()

   597                 # exception due to mutation during iteration.

   598                 # TODO: move this the whole loop to Rust where `iter_mut`

   599                 # enables in-place mutation of elements of a collection while

   600                 # iterating it, without mutating the collection itself.

   601                 files_with_p2_info = [

   602                     f for f, s in self._map.items() if s.p2_info

   603                 ]

   604                 rust_map = self._map

   605                 for f in files_with_p2_info:

   606                     e = rust_map.get(f)

   607                     source = self.copymap.pop(f, None)

   608                     if source:

   609                         copies[f] = source

   610                     e.drop_merge_data()

   611                     rust_map.set_dirstate_item(f, e)