We have moved from Mercurial to GIT and at the same time have moved the repository
over to GitHub at https://github.com/unreal-ircd/unrealircd/.
We hope the move to GitHub will give (development) a bit more exposure and make it easier for people to contribute.
Apologies for the inconvenience.
PS: If you are the account holder or know the account holder of the 'unrealircd' account at GitHub, then please contact firstname.lastname@example.org as we would prefer to use 'unrealircd' over 'unreal-ircd' (which is what we are using now). It's just a detail, but still..