Case 1: If your branch was created from the master, then while being in the branch perform the following command:
$ git cherry -v master
Alternatively you can use:
$ git log master..
Case 2: If you are not in the branch, then you can add the branch name to the "git log" command as shown below:
$ git log master..branchname
Note: If your branch was created from the origin/master, then mention origin/master instead of master.