Unable to clone rag-solutions repository

Tried to clone rag-solutions using the following command:
git clone --depth 2 --filter=blob:none --no-checkout https://github.com/aws-samples/amazon-bedrock-samples && cd amazon-bedrock-samples && git checkout main rag-solutions/contextual-chatbot-using-knowledgebase

Getting the following error:
error: unable to read sha1 file of rag-solutions/contextual-chatbot-using-knowledgebase/README.md (84148615badfddcd8dd778b1c8485ae44dab54e1)
Unlink of file 'rag-solutions' failed. Should I try again? (y/n)

See below screenshot:

Run the exact shallow, filtered clone and checkout command from the issue, then inspect the reported rag-solutions/contextual-chatbot-using-knowledgebase/README.md path and its referenced object. Done means the repository clones without the SHA-1 error and the requested path can be checked out successfully.

Written by the indexing model from the issue text.