What for?

Suppose I am making some changes to my topic branch topic

After three commits, I realize I don't have topic checked out

I have main checked out

CRAP

I can use git-rebase to copy the commits to the right branch

       git rebase topic

Then I put main back where it is supposed to go

        git checkout topic
        git reset --hard main
        git checkout main
        git reset --hard HEAD~5

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