As pointed out in other comments, git does allow this by using `git log --graph` and 'merge --no-ff'. However, it is also necessary to use git "empty" commits

As pointed out in other comments, git does allow this by using `git log --graph` and 'merge --no-ff'. However, it is also necessary to use git "empty" commits as the first commit of each "group" to prevent confusing output from 'git log --graph' when nesting and sub-nesting groups of commits. Here's an example of doing this -- https://github.com/maratbn/test_nested_sub_groups_of_commits/tree/master--w-empty-commits https://github.com/maratbn/test_nested_sub_groups_of_commits...