Build debian kernel package from git

gistfile1.txt

git clone -b sid --single-branch https://salsa.debian.org/kernel-team/linux.git
wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.2.9.tar.xz
cd linux/
edit file linux/debian/config/defines and change debug-info to false
edit file linux/debian/config/amd64/defines and change debug-info to false
debian/bin/genorig.py ../linux-5.2.9.tar.xz # create original source tar package)
debian/rules orig # unpack original source
debian/rules debian/control # create control file
fakeroot debian/rules source
fakeroot make -j24 -f debian/rules.gen binary-arch_amd64_none_amd64
fakeroot make -j24 -f debian/rules.gen binary-arch_amd64_real # also header files, libc-dev files
fakeroot debian/rules binary-indep # build arch independent packages (for example doc)

alternatively:

scripts/config --disable SYSTEM_TRUSTED_KEYRING
scripts/config --set-str SYSTEM_TRUSTED_KEYS ''
scripts/config --disable DEBUG_INFO

where you would want to turn off debug info and avoid using trusted keys.