It also looks like using ansible + git. However, also gitflow is just a clever use of git branches, but having a standard way of doing things using simple exist

It also looks like using ansible + git. However, also gitflow is just a clever use of git branches, but having a standard way of doing things using simple existing tools (git + ssh here) defined by someone who has studied the problem is very valuable to other people who has similar issues, but didn't study the case yet.