I acted in the direction of Download from Git, but it does not clone at all.
I used the git clone code https://github.com/wikimedia/mediawiki.git --branch REL1_31 and I clone it, but the following command did not run:
cd mediawiki
git submodule update --nit
It does not work and gives the following error
fatal: unable to connect Could not connect to server
please guide me
Thankful