Home Assistant can't get dev version on env

Hi there, while trying to update to HA dev version, i ran this code as shown on the official website

pip3 install --upgrade git+git://github.com/home-assistant/home-assistant.git@dev

it returns

Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting git+http://github.com/home-assistant/home-assistant.git@dev
  Cloning http://github.com/home-assistant/home-assistant.git (to revision dev) to /tmp/pip-req-build-3b2y_2s9
error: RPC failed; curl 56 GnuTLS recv error (-9): Error decoding the received TLS packet.
fatal: the remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed
Command "git clone -q http://github.com/home-assistant/home-assistant.git /tmp/pip-req-build-3b2y_2s9" failed with error code 128 in None