You tried it, yes, but you have the ssh keys necessary to authenticate as the git user on that server, which no one outside your company does :) If you want folks to be able to clone your repository without having to add their public keys to your ssh server config, then you will indeed want to contact IT to get anonymous access going.
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Christopher Larson
clarson at kergoth dot com
Founder - BitBake, OpenEmbedded, OpenZaurus
Maintainer - Tslib
Senior Software Engineer, Mentor Graphics