To clarify the problem:
Usually, when we want to use the transformer in it’s original form we do:
!pip install transformers
import transformers
from transformers import BertTokenizer, BertModel

If I want to change a class or two, what changes should I make to the above code snippet to import the BertTokenizer and BertModel. I am assuming cloning the repository and making the edits in the desired file is fine.