By default, Git extensions set up a branch to redirect to the branch you are currently working on. So, if you do not change this, you have nothing to do, and you will receive a "noop" message. You must reinstall something that is not your current HEAD. Either it will be a certain number of revolutions from your head (for example, HEAD ~ 4), or the original version of your branch (for example: origin / master) or a specific named commit.
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