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 0.61 Ignore-this: 411c2bb976b71bafafa8d429d65db601 darcs-hash:edb5f2e8066d170c33b9fc2981bfcb085c3a57ff
TAG 0.6 Ignore-this: bf34825d24aad3d83d641ce76b0898d2 darcs-hash:9f178b59e7e18c01a877e1f426e1f6d9225b01bf
TAG 0.52 darcs-hash:aaa83cbfb11ddc0334e19ee1a9ba6df4fe1094e5
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TAG 0.32 darcs-hash:c8f9ff7e0ccfbfc3b4aaea441c9c84254de692b8
TAG 0.31 darcs-hash:cbe0f760aada3126d7b73f58c6009e3244b774bc
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TAG 0.1 darcs-hash:9e9b970be543799a3fa1e799ce0e889ba0ac80b3