It is useful to use local git repo’s on your Linux server to track any changes to important files. Not only for you as to have a history of the changes, but also it can track any changes that might happen when a yum update has run. In my experience I have seen that important files are changed either by your co-worker or an update, and when the server is rebooted, or a service is restarted, it stops due to a configuration error. Therefore, use git to track changes. In the case you are running many servers, local git repos might not be the answer. Then look more into Puppet and/or Ansible.
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