Cannot install these packages of MAG of ogb_lsc

Hello,
I an trying to retraining your model of paper OGB-LSC on MAG240M-LSC
When I set up Python virtual environment with the README, it appears a problem on the step `pip3 install -r ogb_lsc/mag/requirements.txt`

`Running command git clone --filter=blob:none --quiet git://github.com/deepmind/graph_nets.git /tmp/pip-req-build-0qj6i2cm
fatal: unable to connect to github.com:
github.com[0: 20.205.243.166]: errno=Connection timed out

error: subprocess-exited-with-error

× git clone --filter=blob:none --quiet git://github.com/deepmind/graph_nets.git /tmp/pip-req-build-0qj6i2cm did not run successfully.
│ exit code: 128
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× git clone --filter=blob:none --quiet git://github.com/deepmind/graph_nets.git /tmp/pip-req-build-0qj6i2cm did not run successfully.
│ exit code: 128
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.`

But I have checked that I can connect to github.com well on the server, do you have some advices, thanks a lot.