When cherry-picking a (presumably trivial) commit that has only the one-line summary (and no further text), cherry-pick -x appends it's message directly to the one-line summary.
Thereby creating a commit which has a two-line summary.
Aside from that, even with a non-trivial commit the generated note "(cherry picked from commit 555c9864971744abb558796aea28e12a1ac20839)" seems abrupt when appended directly.
I'd suggest:
"\n[cherry-picked from commit 555c9864971744abb558796aea28e12a1ac20839]"
or even better:
"\n[cherry-picked from commit 555c986]"
I'll turn this into an actual patch if there's a chance of it being incorporated.
- Eric