As a consultant you are bound to meet poorly maintained and slow infrastructure services like version control services, trackers and what not.
Though there are real situations where information has to be kept as secret and truly inhouse I argue that there are more situations where code and information stored in the internal version control is mundane business code, which could as well be maintained in well kept and fast cloud service.
These days Bitbucket offers unlimited plan for 80 euros per month, which is a minimal cost.
Wouldn’t it be a good idea to release your IT-support’s time to more productive work than to maintain second class version control for not so secret internal projects? Let those projects be hosted in private repos in Github or Bitbucket – and then put necessary resources and infrastructure in place for proper internal solution for more secure projects.