Assume that you are on macOS, and you need headfiles of boost.

• (Search 'boost' on github.com or gitee.com, and clone)
  git clone https://gitee.com/mirrors/boost.git --depth=1

• git pull for historical versions

cd boost/
git pull --unshallow

• Reset to special commit version, check from its release page on github.com, such as commit 436ad1d
  git reset --hard 436ad1d

• Update sub-modules
  git submodule update --init

• Main process

./bootstrap.sh
./b2 ## (Maybe ./b2 install)

• Headfiles will be placed to /usr/local/include/boost/