Tag the 10.0.0 version bump. The tag name, llvmorg-10-init, signifies that this is the initial commit with major version number 10. With this tag in place, git-describe can be used to generate nicer names for commits on master, for example: $ git describe <hash> llvmorg-10-init-<number>-g<hash> where <number> is the number of commits since this tag. The plan is to add this kind of tag together with future version bumps.