I was able to build the Debian-Installer without any issues up until about 2 days ago but now it seems as though something may be wrong with the Debian udeb site as I am getting build errors:
lonnie@debian:~/CloudCore/test/debian-installer/installer/build$ fakeroot make build_netboot-gtk
WARNING: mirror '
https://brave-browser-apt-release.s3.brave.com' appears to be invalid; skipping
WARNING: mirror '
https://brave-browser-apt-release.s3.brave.com' appears to be invalid; skipping
WARNING: mirror '
http://dl.google.com/linux/chrome/deb' appears to be invalid; skipping
WARNING: mirror '
http://dl.google.com/linux/chrome/deb' appears to be invalid; skipping
Using generated sources.list.udeb:
deb [trusted=yes] copy:/home/lonnie/CloudCore/test/debian-installer/installer/build/ localudebs/
deb
http://deb.debian.org/debian unstable main/debian-installer
make[2]: 'sources.list.udeb' is up to date.
Ign:1 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ InRelease
Ign:2 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Release
Ign:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages
Ign:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages
Ign:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages
Get:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages [20 B]
Get:4
http://deb.debian.org/debian unstable InRelease [139 kB]
Get:5
http://deb.debian.org/debian unstable/main/debian-installer amd64 Packages [51.6 kB]
Fetched 190 kB in 0s (403 kB/s)
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
dh_testroot
dh_testroot: dh_testroot must be called from the source root
get-packages udeb acpi-modules-5.2.0-3-amd64-di alsa-utils-udeb anna archdetect bogl-bterm-udeb brltty-udeb busybox-udeb ca-certificates-udeb cdebconf-gtk-terminal cdebconf-gtk-udeb cdebconf-newt-terminal cdebconf-newt-udeb cdebconf-priority cdebconf-text-udeb cdebconf-udeb choose-mirror choose-mirror-bin console-setup-linux-fonts-udeb console-setup-pc-ekmap console-setup-udeb debian-archive-keyring-udeb di-utils di-utils-reboot di-utils-shell di-utils-terminfo download-installer env-preseed espeak-ng-data-udeb espeakup-udeb ethdetect fat-modules-5.2.0-3-amd64-di fb-modules-5.2.0-3-amd64-di file-preseed fontconfig-udeb fonts-android-udeb fonts-dejavu-mono-udeb fonts-dejavu-udeb fonts-farsiweb-udeb fonts-freefont-udeb fonts-khmeros-udeb fonts-knda-udeb fonts-lao-udeb fonts-lohit-guru-udeb fonts-mlym-udeb fonts-noto-hinted-udeb fonts-sil-abyssinica-udeb fonts-sil-padauk-udeb fonts-taml-udeb fonts-telu-udeb fonts-thai-tlwg-udeb fonts-tibetan-machine-udeb fonts-ukij-uyghur-udeb gpgv-udeb gtk2-engines-udeb haveged-udeb hw-detect initrd-preseed input-modules-5.2.0-3-amd64-di installation-locale kbd-udeb kernel-image-5.2.0-3-amd64-di libasound2-udeb libatk-adaptor-udeb libatk-bridge-2.0-0-udeb libatk1.0-udeb libatspi0-udeb libblkid1-udeb libbsd0-udeb libc6-udeb libcairo2-udeb libcrypto1.1-udeb libdatrie1-udeb libdbus-1-3-udeb libdebconfclient0-udeb libdebian-installer4-udeb libdrm2-udeb libevdev2-udeb libexpat1-udeb libffi6-udeb libfontenc1-udeb libfreetype6-udeb libfribidi0-udeb libgail18-udeb libgcrypt20-udeb libgdk-pixbuf2.0-0-udeb libglib2.0-udeb libgpg-error0-udeb libgtk2.0-0-udeb libharfbuzz0-udeb libiw30-udeb libkmod2-udeb libmtdev1-udeb libnewt0.52-udeb libnl-3-200-udeb libnl-genl-3-200-udeb libpango1.0-udeb libpci3-udeb libpciaccess0-udeb libpcre2-8-0-udeb libpcre3-udeb libpixman-1-0-udeb libpng16-16-udeb libslang2-udeb libssl1.1-udeb libtextwrap1-udeb libthai-data-udeb libthai0-udeb libtinfo6-udeb libudev1-udeb libuuid1-udeb libvte9-udeb libx11-6-udeb libxau6-udeb libxcb1-udeb libxcursor1-udeb libxdmcp6-udeb libxext6-udeb libxfixes3-udeb libxfont2-udeb libxft2-udeb libxi6-udeb libxinerama1-udeb libxkbfile1-udeb libxrender1-udeb libxshmfence1-udeb localechooser lowmemcheck main-menu media-retriever mountmedia mouse-modules-5.2.0-3-amd64-di nano-udeb ndisc6-udeb net-retriever netcfg network-preseed nic-modules-5.2.0-3-amd64-di nic-pcmcia-modules-5.2.0-3-amd64-di nic-usb-modules-5.2.0-3-amd64-di nic-wireless-modules-5.2.0-3-amd64-di pciutils-udeb pcmcia-modules-5.2.0-3-amd64-di pcmciautils-udeb preseed-common rdnssd-udeb rescue-check rootskel rootskel-gtk save-logs sound-modules-5.2.0-3-amd64-di speakup-modules-5.2.0-3-amd64-di udev-udeb udpkg usb-modules-5.2.0-3-amd64-di usb-storage-modules-5.2.0-3-amd64-di util-linux-udeb wget-udeb wide-dhcpv6-client-udeb wpasupplicant-udeb x11-xkb-utils-udeb xkb-data-udeb xserver-xorg-core-udeb xserver-xorg-input-evdev-udeb xserver-xorg-video-fbdev-udeb zlib1g-udeb
make[3]: 'sources.list.udeb' is up to date.
Ign:1 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ InRelease
Ign:2 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Release
Ign:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages
Ign:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages
Ign:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages
Get:3 copy:/home/lonnie/CloudCore/test/debian-installer/installer/build localudebs/ Packages [20 B]
Hit:4
http://deb.debian.org/debian unstable InRelease
Fetched 20 B in 0s (81 B/s)
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Need to download: acpi-modules-5.2.0-3-amd64-di alsa-utils-udeb anna archdetect bogl-bterm-udeb brltty-udeb busybox-udeb ca-certificates-udeb cdebconf-gtk-terminal cdebconf-gtk-udeb cdebconf-newt-terminal cdebconf-newt-udeb cdebconf-priority cdebconf-text-udeb cdebconf-udeb choose-mirror choose-mirror-bin console-setup-linux-fonts-udeb console-setup-pc-ekmap console-setup-udeb debian-archive-keyring-udeb di-utils di-utils-reboot di-utils-shell di-utils-terminfo download-installer env-preseed espeak-ng-data-udeb espeakup-udeb ethdetect fat-modules-5.2.0-3-amd64-di fb-modules-5.2.0-3-amd64-di file-preseed fontconfig-udeb fonts-android-udeb fonts-dejavu-mono-udeb fonts-dejavu-udeb fonts-farsiweb-udeb fonts-freefont-udeb fonts-khmeros-udeb fonts-knda-udeb fonts-lao-udeb fonts-lohit-guru-udeb fonts-mlym-udeb fonts-noto-hinted-udeb fonts-sil-abyssinica-udeb fonts-sil-padauk-udeb fonts-taml-udeb fonts-telu-udeb fonts-thai-tlwg-udeb fonts-tibetan-machine-udeb fonts-ukij-uyghur-udeb gpgv-udeb gtk2-engines-udeb haveged-udeb hw-detect initrd-preseed input-modules-5.2.0-3-amd64-di installation-locale kbd-udeb kernel-image-5.2.0-3-amd64-di libasound2-udeb libatk-adaptor-udeb libatk-bridge-2.0-0-udeb libatk1.0-udeb libatspi0-udeb libblkid1-udeb libbsd0-udeb libc6-udeb libcairo2-udeb libcrypto1.1-udeb libdatrie1-udeb libdbus-1-3-udeb libdebconfclient0-udeb libdebian-installer4-udeb libdrm2-udeb libevdev2-udeb libexpat1-udeb libffi6-udeb libfontenc1-udeb libfreetype6-udeb libfribidi0-udeb libgail18-udeb libgcrypt20-udeb libgdk-pixbuf2.0-0-udeb libglib2.0-udeb libgpg-error0-udeb libgtk2.0-0-udeb libharfbuzz0-udeb libiw30-udeb libkmod2-udeb libmtdev1-udeb libnewt0.52-udeb libnl-3-200-udeb libnl-genl-3-200-udeb libpango1.0-udeb libpci3-udeb libpciaccess0-udeb libpcre2-8-0-udeb libpcre3-udeb libpixman-1-0-udeb libpng16-16-udeb libslang2-udeb libssl1.1-udeb libtextwrap1-udeb libthai-data-udeb libthai0-udeb libtinfo6-udeb libudev1-udeb libuuid1-udeb libvte9-udeb libx11-6-udeb libxau6-udeb libxcb1-udeb libxcursor1-udeb libxdmcp6-udeb libxext6-udeb libxfixes3-udeb libxfont2-udeb libxft2-udeb libxi6-udeb libxinerama1-udeb libxkbfile1-udeb libxrender1-udeb libxshmfence1-udeb localechooser lowmemcheck main-menu media-retriever mountmedia mouse-modules-5.2.0-3-amd64-di nano-udeb ndisc6-udeb net-retriever netcfg network-preseed nic-modules-5.2.0-3-amd64-di nic-pcmcia-modules-5.2.0-3-amd64-di nic-usb-modules-5.2.0-3-amd64-di nic-wireless-modules-5.2.0-3-amd64-di pciutils-udeb pcmcia-modules-5.2.0-3-amd64-di pcmciautils-udeb preseed-common rdnssd-udeb rescue-check rootskel rootskel-gtk save-logs sound-modules-5.2.0-3-amd64-di speakup-modules-5.2.0-3-amd64-di udev-udeb udpkg usb-modules-5.2.0-3-amd64-di usb-storage-modules-5.2.0-3-amd64-di util-linux-udeb wget-udeb wide-dhcpv6-client-udeb wpasupplicant-udeb x11-xkb-utils-udeb xkb-data-udeb xserver-xorg-core-udeb xserver-xorg-input-evdev-udeb xserver-xorg-video-fbdev-udeb zlib1g-udeb
Reading package lists... Done
Building dependency tree... Done
E: Unable to locate package acpi-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'acpi-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'acpi-modules-5.2.0-3-amd64-di'
E: Unable to locate package fat-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'fat-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'fat-modules-5.2.0-3-amd64-di'
E: Unable to locate package fb-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'fb-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'fb-modules-5.2.0-3-amd64-di'
E: Unable to locate package input-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'input-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'input-modules-5.2.0-3-amd64-di'
E: Unable to locate package kernel-image-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'kernel-image-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'kernel-image-5.2.0-3-amd64-di'
E: Unable to locate package mouse-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'mouse-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'mouse-modules-5.2.0-3-amd64-di'
E: Unable to locate package nic-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'nic-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'nic-modules-5.2.0-3-amd64-di'
E: Unable to locate package nic-pcmcia-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'nic-pcmcia-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'nic-pcmcia-modules-5.2.0-3-amd64-di'
E: Unable to locate package nic-usb-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'nic-usb-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'nic-usb-modules-5.2.0-3-amd64-di'
E: Unable to locate package nic-wireless-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'nic-wireless-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'nic-wireless-modules-5.2.0-3-amd64-di'
E: Unable to locate package pcmcia-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'pcmcia-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'pcmcia-modules-5.2.0-3-amd64-di'
E: Unable to locate package sound-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'sound-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'sound-modules-5.2.0-3-amd64-di'
E: Unable to locate package speakup-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'speakup-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'speakup-modules-5.2.0-3-amd64-di'
E: Unable to locate package usb-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'usb-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'usb-modules-5.2.0-3-amd64-di'
E: Unable to locate package usb-storage-modules-5.2.0-3-amd64-di
E: Couldn't find any package by glob 'usb-storage-modules-5.2.0-3-amd64-di'
E: Couldn't find any package by regex 'usb-storage-modules-5.2.0-3-amd64-di'
make[2]: *** [Makefile:674: stamps/get_udebs-netboot-gtk-stamp] Error 100
make[1]: *** [Makefile:298: _build] Error 2
make: *** [Makefile:292: build_netboot-gtk] Error 2
Please help.