Interesting you should mention "git reset", because, depending on the options you give it, it either:

  * reverts one file
  * reverts all files
  * removes changes from the index, but doesn't otherwise change anything at all
  * moves your branch, without changing any files
  * moves your branch and changes all files

This rather makes my point.

"git checkout -b", meanwhile, is not a shorthand for "git branch something", but rather "git branch --track something origin/something", unless there is no "origin/something", in which case you are again correct.