のマニュアルページ git cherry-pick：
...
-x
When recording the commit, append a line that says "(cherry picked
from commit …)" to the original commit message in order to indicate
which commit this change was cherry-picked from. ...
-r
It used to be that the command defaulted to do -x described above,
and -r was to disable it. Now the default is not to do -x so this
option is a no-op.
...
ローカルでデフォルトをに戻し、無効に-xできるようにする構成設定はありますか？-r見つかりませんでしたが、見逃した可能性があります。