@florian for the list of non-pushed commits I use this alias (I missed the feature when I migrated from mercurial to git), maybe it can be useful also for you:

out = !git fetch && git log FETCH_HEAD..

this way you don’t need to start a rebase (if you only want to know commits not pushed yet).

I have also an alias for the opposite:

in = !git fetch && git log ..FETCH_HEAD

I hope this could be useful.

@solene