prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Improve the logic in the  ACSHandleStage
  **Version**
  main
  
  **Describe the bug**
  If there are ACS that point to the same content, pick the first RA instead of last
  
  **To Reproduce**
  Steps to reproduce the behavior:
  
  **Expected behavior**
  A clear and concise description of what you expected to happen.
  
  **Additional context**
  Add any other context about the problem here.  Please provide links to any previous discussions via Discourse or Bugzilla.
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `pulpcore/plugin/repo_version_utils.py`
  Content:
  ```
  1 from collections import defaultdict
  2 from gettext import gettext as _
  3 import logging
  4 
  5 from django.db.models import Q
  6 
  7 
  8 _logger = logging.getLogger(__name__)
  9 
  10 
  11 def remove_duplicates(repository_version):
  12     """
  13     Inspect content additions in the `RepositoryVersion` and replace repository duplicates.
  14 
  15     Some content can have two instances A and B which are unique, but cannot both exist together in
  16     one repository. For example, pulp_file's content has `relative_path` for that file within the
  17     repository.
  18 
  19     Any content newly added to the :class:`~pulpcore.plugin.models.RepositoryVersion` is checked
  20     against existing content in the :class:`~pulpcore.plugin.models.RepositoryVersion` with newer
  21     "repository duplicates" replace existing "repository duplicates". Each Content model can define
  22     a `repo_key_fields` attribute with the field names to be compared. If all `repo_key_fields`
  23     contain the same value for two content units, they are considered "repository duplicates".
  24 
  25     After instantiating `RemoveDuplicates` call it with the `run()` method and pass in the
  26     :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked and possibly modified as a
  27     parameter to `run()`.
  28 
  29     Args:
  30         repository_version: The :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked
  31             and possibly modified.
  32     """
  33     query_for_repo_duplicates_by_type = defaultdict(lambda: Q())
  34     for item in repository_version.added():
  35         detail_item = item.cast()
  36         if detail_item.repo_key_fields == ():
  37             continue
  38         unit_q_dict = {
  39             field: getattr(detail_item, field) for field in detail_item.repo_key_fields
  40         }
  41         item_query = Q(**unit_q_dict) & ~Q(pk=detail_item.pk)
  42         query_for_repo_duplicates_by_type[detail_item._meta.model] |= item_query
  43 
  44     for model in query_for_repo_duplicates_by_type:
  45         _logger.debug(_("Removing duplicates for type: {}".format(model)))
  46         qs = model.objects.filter(query_for_repo_duplicates_by_type[model])
  47         repository_version.remove_content(qs)
  48
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/pulpcore/plugin/repo_version_utils.py b/pulpcore/plugin/repo_version_utils.py
  --- a/pulpcore/plugin/repo_version_utils.py
  +++ b/pulpcore/plugin/repo_version_utils.py
  @@ -22,10 +22,6 @@
       a `repo_key_fields` attribute with the field names to be compared. If all `repo_key_fields`
       contain the same value for two content units, they are considered "repository duplicates".
   
  -    After instantiating `RemoveDuplicates` call it with the `run()` method and pass in the
  -    :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked and possibly modified as a
  -    parameter to `run()`.
  -
       Args:
           repository_version: The :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked
               and possibly modified.
  
verification_info: {"golden_diff": "diff --git a/pulpcore/plugin/repo_version_utils.py b/pulpcore/plugin/repo_version_utils.py\n--- a/pulpcore/plugin/repo_version_utils.py\n+++ b/pulpcore/plugin/repo_version_utils.py\n@@ -22,10 +22,6 @@\n     a `repo_key_fields` attribute with the field names to be compared. If all `repo_key_fields`\n     contain the same value for two content units, they are considered \"repository duplicates\".\n \n-    After instantiating `RemoveDuplicates` call it with the `run()` method and pass in the\n-    :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked and possibly modified as a\n-    parameter to `run()`.\n-\n     Args:\n         repository_version: The :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked\n             and possibly modified.\n", "issue": "Improve the logic in the  ACSHandleStage\n**Version**\r\nmain\r\n\r\n**Describe the bug**\r\nIf there are ACS that point to the same content, pick the first RA instead of last\r\n\r\n**To Reproduce**\r\nSteps to reproduce the behavior:\r\n\r\n**Expected behavior**\r\nA clear and concise description of what you expected to happen.\r\n\r\n**Additional context**\r\nAdd any other context about the problem here.  Please provide links to any previous discussions via Discourse or Bugzilla.\r\n\n", "before_files": [{"content": "from collections import defaultdict\nfrom gettext import gettext as _\nimport logging\n\nfrom django.db.models import Q\n\n\n_logger = logging.getLogger(__name__)\n\n\ndef remove_duplicates(repository_version):\n    \"\"\"\n    Inspect content additions in the `RepositoryVersion` and replace repository duplicates.\n\n    Some content can have two instances A and B which are unique, but cannot both exist together in\n    one repository. For example, pulp_file's content has `relative_path` for that file within the\n    repository.\n\n    Any content newly added to the :class:`~pulpcore.plugin.models.RepositoryVersion` is checked\n    against existing content in the :class:`~pulpcore.plugin.models.RepositoryVersion` with newer\n    \"repository duplicates\" replace existing \"repository duplicates\". Each Content model can define\n    a `repo_key_fields` attribute with the field names to be compared. If all `repo_key_fields`\n    contain the same value for two content units, they are considered \"repository duplicates\".\n\n    After instantiating `RemoveDuplicates` call it with the `run()` method and pass in the\n    :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked and possibly modified as a\n    parameter to `run()`.\n\n    Args:\n        repository_version: The :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked\n            and possibly modified.\n    \"\"\"\n    query_for_repo_duplicates_by_type = defaultdict(lambda: Q())\n    for item in repository_version.added():\n        detail_item = item.cast()\n        if detail_item.repo_key_fields == ():\n            continue\n        unit_q_dict = {\n            field: getattr(detail_item, field) for field in detail_item.repo_key_fields\n        }\n        item_query = Q(**unit_q_dict) & ~Q(pk=detail_item.pk)\n        query_for_repo_duplicates_by_type[detail_item._meta.model] |= item_query\n\n    for model in query_for_repo_duplicates_by_type:\n        _logger.debug(_(\"Removing duplicates for type: {}\".format(model)))\n        qs = model.objects.filter(query_for_repo_duplicates_by_type[model])\n        repository_version.remove_content(qs)\n", "path": "pulpcore/plugin/repo_version_utils.py"}], "after_files": [{"content": "from collections import defaultdict\nfrom gettext import gettext as _\nimport logging\n\nfrom django.db.models import Q\n\n\n_logger = logging.getLogger(__name__)\n\n\ndef remove_duplicates(repository_version):\n    \"\"\"\n    Inspect content additions in the `RepositoryVersion` and replace repository duplicates.\n\n    Some content can have two instances A and B which are unique, but cannot both exist together in\n    one repository. For example, pulp_file's content has `relative_path` for that file within the\n    repository.\n\n    Any content newly added to the :class:`~pulpcore.plugin.models.RepositoryVersion` is checked\n    against existing content in the :class:`~pulpcore.plugin.models.RepositoryVersion` with newer\n    \"repository duplicates\" replace existing \"repository duplicates\". Each Content model can define\n    a `repo_key_fields` attribute with the field names to be compared. If all `repo_key_fields`\n    contain the same value for two content units, they are considered \"repository duplicates\".\n\n    Args:\n        repository_version: The :class:`~pulpcore.plugin.models.RepositoryVersion` to be checked\n            and possibly modified.\n    \"\"\"\n    query_for_repo_duplicates_by_type = defaultdict(lambda: Q())\n    for item in repository_version.added():\n        detail_item = item.cast()\n        if detail_item.repo_key_fields == ():\n            continue\n        unit_q_dict = {\n            field: getattr(detail_item, field) for field in detail_item.repo_key_fields\n        }\n        item_query = Q(**unit_q_dict) & ~Q(pk=detail_item.pk)\n        query_for_repo_duplicates_by_type[detail_item._meta.model] |= item_query\n\n    for model in query_for_repo_duplicates_by_type:\n        _logger.debug(_(\"Removing duplicates for type: {}\".format(model)))\n        qs = model.objects.filter(query_for_repo_duplicates_by_type[model])\n        repository_version.remove_content(qs)\n", "path": "pulpcore/plugin/repo_version_utils.py"}]}