List of best mirrors for IP address 18.191.223.30, 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-7/libclang-common-7-dev-dbgsym_7.0.1-8+rpi3+deb10u2_arm64.deb