Remove a merge from master

Question

I had a branch that I merged into master. Then we've merged other things into master after that. So we now have this state in master

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stuff added to master recently
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my branch merged into master
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old stuff in master
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I want to remove my merge from master and leave all else intact so that I get the following state in master

------------------------------
stuff added to master recently
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old stuff in master
------------------------------

How do I do that?

score 2 · Accepted Answer · edited May 23 '17 at 12:27

You could do a rebase interactive on master, and use that interactive rebase session to drop the commits you don't want anymore (git rebase -i).

git checkout master
git rebase -i <SHA1 old stuff in master>

Note that it will change the master history, which would lead to a git push --force if you already pushed master to a remote repo. And that could be inconvenient for others having already pulled from that same remote repo.

If you had already pushed master, then a git revert -m 1 would be easier to push as well: See "Undo a Git merge?". That will create a new commit (cancelling the merge one)

Remove a merge from master

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