Upgrading to git 2.3.4-1 results in this behaviour:
$ git --version && pacman -Q git git version 2.3.4 git 2.3.4-1 $ git fetch ssh: Could not resolve hostname build01.evidente.local:: Name or service not known fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.
Downgrading to 2.3.2-1 is a workaround.
Probably fixed by now. Closing. New issues can be filed on GitHub.