This is what powered almost all of my colab
Mostly uses LZ4 compression, which means you'll need a specialized program to extract it, especially in windows.
For Windows users, I recommend using 7zip-zstd (it's 7zip but with lz4 support and more)
For Linux users, use tar with liblz4-tool like this: tar -xI lz4 -f repo.tar.lz4