I solved the previous error about macros expanded in comments, and now
the build fails for other strange reasons.
https://copr.fedorainfracloud.org/coprs/germano/kernel_204253_comment_14_...
By the way by commenting my patch on spec file, the kernel builds
successfully
https://copr.fedorainfracloud.org/coprs/germano/kernel_fedora_vanilla/bui...
therefore the problem maybe my patch not being in git patch format....
Instead of using "git format-patch" against branches, I wanted to use it
against two local folders like I do with "diff" command during my
packaging activity, so I tried
git format-patch --dirstat linux-5.7-orig linux-5.7
but it did not return anything.