How do I swap the order of two parents of a Git commit?

Question

A merge commit is a commit with at least two parents. These parents are in specific order.

If I\'m currently on the branch master, and I merge in the br

Answer 1

Inspired by this answer, I came up with this:

git replace -g HEAD HEAD^2 HEAD^1 && 
git commit --amend && 
git replace -d HEAD@{1}

The first commands switches the two parents in something called a replacement ref, but only stores it locally, and people have called it a hack.

The second command creates a new commit.

The third command deletes the older replacement ref, so it doesn't mess up the other commits depending on that commit.