Show parent SHA1 on cherry picking a merge commit

What steps will reproduce the problem?

1. try to cherry pick a commit which is a merged commit

What is the expected output? What do you see instead?

expected: cherry pick it

instead: a dialog showed,ask me to choose parent1 or parent2

What version of TortoiseGit and Git are you using? On what operating system?

TortoiseGit 2.5.0.0 (C:\Program Files\TortoiseGit\bin)

git version 2.14.2.windows.1 (C:\Program Files\Git\bin; C:\Program Files\Git\mingw64; C:\Program Files\Git\mingw64\etc\gitconfig; C:\ProgramData\Git\config)

Microsoft Windows [Version 10.0.10586]

Please provide any additional information below.

TortoiseGit show me a dialog to choose parent,I have no idea about parent1 or parent2, if you can attach the commit sha-1 of parent,it would be better.