Git clone stuck -- Blocked ports?

I am trying to download a library via git, and it seems to be getting stuck everytime on

'Cloning into [name]...' 

no matter which library I try to开发者_运维百科 connect to. My question is what ports does git use?

I guess my company could be blocking that port. Has anyone seen this before?

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The ports are 22 (ssh), 443 (https) and 9418 for its own, read-only protocol. The protocol is the part of the repo URL before the ://, except in the case of ssh, where the URL starts with [user]@[host]:.