This is actually how Apple does some of their open-source projects. For example, the XNU kernel at the heart of macOS is open source, along with some of its ke

This is actually how Apple does some of their open-source projects. For example, the XNU kernel at the heart of macOS is open source, along with some of its kernel extensions. Apple isn’t interested in having other people work on it though or having their commit history unveil vulnerabilities, so they just squash all the commits into one and release the tarball for every new macOS version. Open-source kernel? Check.