Get a list of all Git commits, including the 'lost' ones

Let's say that I have a graph like this:

A---B---C---D (master)
     \
      \-E---F (HEAD)

If I do git log --all --oneline, I will get all six of my commits.

But if the graph is:

A---B---C---D (master, HEAD)
     \
      \-E---F

I will not see E and F. Can I get Git to tell me all the commits, including those on branches which are not named?