Failed to clone 'test-repo' a second time, aborting

Unable to clone the test repo because the app hosted on Fly.io is down:
https://github.com/dwyl/gogs/actions/runs/26736762179/job/78791487394#step:3:6

```sh
Run git submodule update --init
Submodule 'test-repo' (https://gogs-server.fly.dev/nelsonic/public-repo.git) registered for path 'test-repo'
Cloning into '/home/runner/work/gogs/gogs/test-repo'...
fatal: unable to access 'https://gogs-server.fly.dev/nelsonic/public-repo.git/': Recv failure: Connection reset by peer
fatal: clone of 'https://gogs-server.fly.dev/nelsonic/public-repo.git' into submodule path '/home/runner/work/gogs/gogs/test-repo' failed
Failed to clone 'test-repo'. Retry scheduled
Cloning into '/home/runner/work/gogs/gogs/test-repo'...
fatal: unable to access 'https://gogs-server.fly.dev/nelsonic/public-repo.git/': Recv failure: Connection reset by peer
fatal: clone of 'https://gogs-server.fly.dev/nelsonic/public-repo.git' into submodule path '/home/runner/work/gogs/gogs/test-repo' failed
Failed to clone 'test-repo' a second time, aborting
Error: Process completed with exit code 1.
```

https://gogs-server.fly.dev