How do you find who merged a git commit into a branch?

Question

There is a file in our git repository in work, I want to find out who merged this file into a branch.

I have the commit hash that identifies the commit (lets say 5

Answer 1

If I understand you correctly, you have C5, and you are searching for C6. If it's the case, you are probably looking for this:

git rev-list --merges HEAD --not  --reverse

It will give you the list of merge commits which happened after your hash commit. I use HEAD in this command believing that you are be on master, in the example, or staging in your situation.

In a not-too-complex environment you are probably looking for the first merge which happened after your commit... But if you have not this kind of chance, You can try:

git log --graph --decorate HEAD...^

Or any graphic tool to explore your history (such as gitk)...