ok so,
Okay, so you cloned Chrashniels' git and patched with the 6.15 branch, then downloaded the CashyOS patches. Right?
Go into the 6.15 folder and copy/paste the patches you want to apply into your Linux folder
You have of course copied config to .config (in Linux folder)
Run make menuconfig once, save and close. You must run the make menuconfig command in your Linux folder.
Now the base is ready.
Test the patches you want to apply to the kernel, still in the terminal in your Linux folder:
patch -p1 --dry-run < MYPATCH1
if it ok run this commande:
patch -p1 < MYPATCH1
Now relaunch make menu config (always in linux folder)
save, and exist
Now compil your bzlmage-patched
always on your terminal, on linux folder:
make -j$(nproc)
your bzlmage it ok and patched. ready to be tested
Right?