Respectfully, I think you're missing the point. The GP is not asking for an explanation (and could look that up from the Git docs) but commenting on how user-hostile it is. There's lots of software like this, which is so unfriendly that once you've learned the minimum of how to do something and verify it worked, you don't want to touch it any more unless you really need to.

CLI output should be in plain language and omit or minimize unnecessary detail absent a -verbose flag - for example, I'm just not interested in how many threads something took unless I'm working on it. As a user, I want to be focused on the task I'm doing, not on the perfromance of the tool.

I dont think the problem is even verbosity here - it really isnt that much text.

The issue is what you and the above points out - it is not easy to read.

What might help dramatically is a simple modification of text (the verbose stuff could be slightly light grey and the important bits fully highlighted white) or even go full IRC with colored text, bold, etc.

Or hell - maybe instead they add a switch that inserts "//comment" like additionally lines to explain what is going on (succinctly) to the average Power User type. The default could be "software engineer" mode and the switch enable "Git for Dummies" mode.