Before we start, you must go to the chapter5 directory, where we made the original clone for this chapter.
We should start by tagging the commit that is ten commits behind origin/stable-2.3 and is not a merge. In order to find that commit, we will use the git log command.
For the git log command, we are using the --no-merges option, which will show commits that only have one parent. The --oneline option we have used before tells Git to limit the output to one line per commit. Moreover, -11 shows us the last 11 commits (10 commits before the latest).
Find the commit as follows:
$ git checkout stable-2.3 $ git log -11 --no-merges --oneline 49ec6c1 Prepare 2.3.2-SNAPSHOT builds 63dcece JGit v2.3.1.201302201838-r 3b41fcb Accept ...
