Error while cloning repo to colab

I am trying to clone my repo to colab but it gives the following error:
!git clone -v

Cloning into ‘hw1-ai1-fall2019’…
fatal: could not read Username for ‘’: No such device or address

I tried doing this instead as found from stack:
!git clone

This leads to this :
ssh: connect to host port 22: Connection timed out
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.