Kernel/Patch Compile Issue

On a GPD Pocket 3 N6000, I'm trying to recompile the 5.13 kernel (its source is as close as I can get to UM 22.04's current kernel).

After successfully patching (for sound), I'm using UM's default config setup and the kernel appears to compile. But while making the actual .deb packages, the process fails with:

dpkg-source: info: use the '3.0 (quilt)' format to have separate and documented changes to upstream files, see dpkg-source(1)
dpkg-source: error: unrepresentable changes to source
dpkg-buildpackage: error: dpkg-source -i.git -b . subprocess returned exit status 1
make[1]: *** [scripts/Makefile.package:77: deb-pkg] Error 1
make: *** [Makefile:1565: deb-pkg] Error 2

Any idea why?

If I compile the same source/patch on another computer, using a different config file, it makes the .debs, which obviously don't work b/c I need UM's specific config.

How can I fix this?

Thanks,
Jake