$ sh build_wsl_module.sh

$ sudo mkdir -p /usr/lib/modules_overlay/work/5.15.146.1-microsoft-standard-WSL2
$ sudo mkdir -p /usr/lib/modules_overlay/upper/5.15.146.1-microsoft-standard-WSL2
$ sudo mount -t overlay overlay -o \
lowerdir=/usr/lib/modules/5.15.146.1-microsoft-standard-WSL2,\
upperdir=/usr/lib/modules_overlay/upper/5.15.146.1-microsoft-standard-WSL2,\
workdir=/usr/lib/modules_overlay/work/5.15.146.1-microsoft-standard-WSL2 \
/usr/lib/modules/5.15.146.1-microsoft-standard-WSL2

$ cat /etc/wsl.conf
[boot]
command=mount -t overlay overlay -o \
lowerdir=/usr/lib/modules/5.15.146.1-microsoft-standard-WSL2,\
upperdir=/usr/lib/modules_overlay/upper/5.15.146.1-microsoft-standard-WSL2,\
workdir=/usr/lib/modules_overlay/work/5.15.146.1-microsoft-standard-WSL2 \
/usr/lib/modules/5.15.146.1-microsoft-standard-WSL2;\
modprobe zfs

$ sudo dpkg -i linux-module-5.15.146.1-microsoft-standard-wsl2_5.15.146.1-1_amd64.deb
$ sudo dpkg -i zfs_2.2.2-1_amd64.deb

$ sudo zfs version
zfs-2.2.2-1
zfs-kmod-2.2.2-1