If you have netcat and dd installed, you have a wicked fast way to clone a harddrive over the network. You’ll need netcat and dd installed on both machines. On the target machine (the machine you want to push the drive image to) run
nc -l -p 1337 | dd of=/dev/sda
and on the host machine (the machine you want to clone)
dd if=/dev/sda | nc 192.168.1.1 1337
This assumes that your IP is 192.168.1.1, so adjust accordingly.