List of best mirrors for IP address 52.15.92.58, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/multiarch/pool/main/l/llvm-toolchain-13/llvm-13-dev_13.0.1-11+rpi1+b1_arm64.deb