Here’s a neat Git command that might help you with listing merge commits for a specific Git branch.
Go to your current working tree directory and run the following command:
git log <branch> --merges --first-parent
Note(s): In you are dealing with more than one parent, omit
--first-parent if you want to list merges from all commits. And, if you don’t specify the branch, you will get a list of merge commits from whatever commit your current HEAD points to.