Our projects are hosted in code repositories located at Repo server. For most of them we use Mercurial, which is very similar to Git. The most user-friendly Mercurial client is TortoiseHg. An excellent RB Whitaker's tutorial covers both Mercurial and TortoiseHg.
You can configure TortoiseHg for the use with our Repo server with a script hg-config.py. Just download it and run with Python.
You will have to run this script every three months to update server's security fingerprints if you use HTTPS protocol to access repositories. Alternatively, you can configure SSH access in Repo web interface.