from huggingface_hub import hf_hub_download
hf_dataset_identifier = "sayakpaul/ucf101-subset"
filename = "UCF101_subset.tar.gz"
file_path = hf_hub_download(repo_id=hf_dataset_identifier, filename=filename, repo_type="dataset")

After the subset has been downloaded, you need to extract the compressed archive:
 

import tarfile
with tarfile.open(file_path) as t:
      t.extractall(".")