Is there a way to cherry-pick a merge?

["George Spelvin" <linux@horizon.com>]

Sometimes I'd like to repeat a previously performed merge, preserving
the commit message.  And, if possible, the conflict resolutions.

"git cherry-pick -m 1 <commit>" gets me the changes, but makes an
ordinary single-parent commit, not a merge.

"git rebase -p --onto HEAD commit^ commit" does the right thing,
but has two annoying properties:

1) It actually checks out "commit", then goes back to HEAD, thus
   forcing a lot of recompiltion of source files that experience
   no net change from the operation.
2) Because it's intended for multi-step use, it stops and waits for
   confirmation if there are rerere changes.  I'd rather it just did the
   commit if there are no remaining conflict markers, and I'll reset or
   amend it if I'm not happy with the result.

Does something like this exist already?

Thank you!