Can t download previous old version
you should go pytorch.org and find something there.
https://pytorch.org/get-started/previous-versions/
you get
pip install torch==1.7.1+cu92 torchvision==0.8.2+cu92 torchaudio==0.7.2 -f https://download.pytorch.org/whl/torch_stable.html
Both pip
and conda
version are available.