checking out a shebang-patched package source

[brettg]

Hey all.

I am trying to compile the newest Chez Scheme locally from a git 
checkout. There are a number of shebang patches that have to be done for 
it to compile "traditionally" (not using the guix build --with-source) 
so I can generate a .compile_commands for my lsp to know how to 
reference headers and such.

Is there a way to get guix to modify those files that it patches on my 
local checkout so I dont have to go through manually modifying it 
myself?