The gitlab.common-lisp.net system has migrated to a new host. One consequence of this is that the remotes for all cloned repos must now refer to the host gitlab.common-lisp.net rather than simply common-lisp.net.
You can see your current remotes from a cloned directory with git remote -v
If you see common-lisp.net in there without the gitlab. in front of it, then please update your remotes by using e.g. the following command:
git remote set-url origin git@gitlab.common-lisp.net:/{$user|$group}/{$repo}.git (assuming your remote name is origin).
gitlab-runner users: If you are running gitlab-runner on your own infrastructure, you need to update your config to point to https://gitlab.common-lisp.net, if it was previously pointing at simply https://common-lisp.net. The common-lisp.net host can no longer be used interchangeably with gitlab.common-lisp.net as may have worked previously. N.B. you can simply edit your gitlab-runner config and change the hostname; it should not be necessary to change anything with the token which you'll see along with that host url in the gitlab-runner config file.
TAG 0.5 Ignore-this: 6335b770a59b066ec676c56398e19e31 darcs-hash:7ee3f1bc3965193d4c1b8527b909d5ca6c8a62ef
TAG 0.45 darcs-hash:2970f8ab26c6faff5fa32beeaa3439d166f6c4aa
TAG 0.44 darcs-hash:811fd8c82f0210d70e28a99b6c6d78c39d3868c3
TAG 0.43 darcs-hash:02a51c0015f7865a79af05becf9b7a2f782c2481
TAG 0.42 darcs-hash:73c7d16365ee06f53104ad4846f6c4ee79ac8e04
TAG 0.41 darcs-hash:4a8257444d7d2209209f0ad76fee7ab713085e16
TAG 0.4 darcs-hash:ead714e912a7167189be275d50a97332a1b1102b