This is mainly for building packages on the Pi running plain-ol Debian and not Raspbian/Raspberry Pi OS, images are available at https://raspi.debian.net.
--- /dev/null
+AUTOBUILD_CONFIGURE_EXTRA="${AUTOBUILD_CONFIGURE_EXTRA:-} --arch=arm64"
+DEBDIST=bullseye
+source Autobuild/debian.sh
--- /dev/null
+AUTOBUILD_CONFIGURE_EXTRA="${AUTOBUILD_CONFIGURE_EXTRA:-} --arch=armel"
+DEBDIST=bullseye
+source Autobuild/debian.sh
--- /dev/null
+AUTOBUILD_CONFIGURE_EXTRA="${AUTOBUILD_CONFIGURE_EXTRA:-} --arch=armhf"
+DEBDIST=bullseye
+source Autobuild/debian.sh
--- /dev/null
+AUTOBUILD_CONFIGURE_EXTRA="${AUTOBUILD_CONFIGURE_EXTRA:-} --arch=arm64"
+DEBDIST=buster
+source Autobuild/debian.sh
--- /dev/null
+AUTOBUILD_CONFIGURE_EXTRA="${AUTOBUILD_CONFIGURE_EXTRA:-} --arch=armel"
+DEBDIST=buster
+source Autobuild/debian.sh
--- /dev/null
+AUTOBUILD_CONFIGURE_EXTRA="${AUTOBUILD_CONFIGURE_EXTRA:-} --arch=armhf"
+DEBDIST=buster
+source Autobuild/debian.sh