git has had this behavior for at least a decade. As well, macOS does not ship with git - it's installed as part of either the Command Line Tools package and/or Xcode and is reasonably up to date.

For many years now, macOS has included what are effectively wrappers in /usr/bin for the various development tools and that use the xcode-select mechanism to run the actual command. If neither Xcode nor the CLT package are installed, you'll get a prompt to install the CLT package.