How stop adding copyright after file move + rebase? Follow

I am doing a large refactor of our codebase and moving lots of files to different modules.  For the initial move, the process is fine; file contents are not touched and so the change appears only as a "R" rename in git (making code reviews significantly easier). But whenever I rebase onto our latest develop branch, files that I moved and that do not have a file header (e.g. copyright notice) will have the copyright inserted.  This is very annoying as it makes it hard to see what was only a move vs an actual change.   I cannot see anyway to turn this off, but I may just not know where to look in prefs.  Suggestions?