How can I increment a field using bulk_create in Django?

I have a Django model where I need to count reference numbers. If a record exists, I increment its reference_count by 1, otherwise I create a new record with reference_count set to 1. Here’s the existing code that handles this logic:

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if not RawFileReference.objects.filter(
    raw_file_name=image_info["raw_file_name"]
).exists():
    raw_file = RawFileReference.objects.create(
        **{"raw_file_name": image_info["raw_file_name"], "reference_count": 1}
    )
else:
    raw_file = RawFileReference.objects.get(
        raw_file_name=image_info["raw_file_name"]
    )
    raw_file.reference_count += 1
    raw_file.save()

I want to refactor this using bulk_create, but I'm not sure how to implement the '+1' increment feature within that bulk operation. Any suggestions?