[kmacleod]

  git log <base-branch>..<branch>

I often need the count of commits, usually for build IDs,

  git rev-list --count <branch> ^<base-branch>

I usually use gitk for visualizing branch commits. CLI equivalent is

  git log --graph --oneline --all

[liveoneggs]

he is saying that finding <base-branch> is too hard. There is probably some magic with git merge-base or git show-branch but I don't know them well enough to do it