From: Herton R. Krzesinski on gitlab.com https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3588#note_2285546...
You can just edit the MR and copy the same commit changelog from it.
This is not unecessary, ark/fedora requires DCO (Developer Certificate of Origin), thus you need to add your Signoff to both commit and MR description, eg. see https://wiki.linuxfoundation.org/dco