Create patch or diff file from git repository for target directory and apply it to another different git repository with different directory

Question

Here is similar question.

git format-patch -k R1..R2

But I want only commits from current directory and removing relative path or change path at all

For example by doing:

git format-patch -k R1..R2 .

I get patches with ext/DbAccess/Mojolicious/Command/db_env.pm path. But I want Mojolicious/Command/db_env.pm because I am currently at ext/DbAccess directory.

Is this possible?