SSIA. When importing an externally-hosted git repository, it is mandatory to supply an SSH key credential, even if you are pulling from a no-credential protocol such as git://.
Reproduce:
- configure new externally-hosted git repository in Diffusion
- enter URL as git://, e.g. git://anongit.freedesktop.org/wayland/wayland
- be required to supply an SSH key from Passphrase credentials (unless you have no credentials installed, in which case it's happy to continue with one)
- shed a single tear