I suspect there are other factors at play with your connection to Google Drive.
IN the same folder, another document lists the commands to build it from scratch.
The 6.4 commands are untested.
Code:
apt update
sudo apt install -y build-essential bin86 libncurses5-dev pkg-config libssl-dev dwarves bison flex gnupg libelf-dev libssl-dev wget qtbase5-dev debhelper rsync git
mkdir rtlinux
cd rtlinux
git clone -b v6.3 --depth 1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git linux-6.3
wget https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/6.3/patch-6.3-rt11.patch.gz
tar xvf linux-6.3.tar.xz
gunzip patch-6.3-rt11.patch.gz
cp patch-6.3-rt11.patch linux-6.3
cd linux-6.3
cat patch-6.3-rt11.patch | patch -p1
git add *
make xconfig
#Set the following: General Settings/Preemption model = Fully Preemptible Kernel
#Save then exit (Click on General settings and select option on the right side.
# These keys override security and key settings to allow .debs to be built
scripts/config --disable SYSTEM_REVOCATION_KEYS
scripts/config --disable DEBUG_INFO
scripts/config --enable DEBUG_INFO_NONE
scripts/config --set-str SYSTEM_TRUSTED_KEYS ""
make -j4 deb-pkg LOCALVERSION=-linuxcnc
