What is the right procedure for cloning from someone else’s repo.

For example, I wanted to see what was going wrong for Tobias in #16615, so after some detective work I tried

git clone --recursive git@gitlab.haskell.org:tdammers/ghc.git tdammers

but I got lots of errors:

Cloning into '/home/simonpj/code/tdammers/libffi-tarballs'...

setsockopt IPV6_TCLASS 8: Operation not permitted:

> GitLab: The project you were looking for could not be found.

fatal: Could not read from remote repository.

Please make sure you have the correct access rights

and the repository exists.

fatal: clone of 'git@gitlab.haskell.org:tdammers/libffi-tarballs.git' into submodule path '/home/simonpj/code/tdammers/libffi-tarballs' failed

Failed to clone 'libffi-tarballs'. Retry scheduled

Cloning into '/home/simonpj/code/tdammers/libraries/Cabal'...

setsockopt IPV6_TCLASS 8: Operation not permitted:

> GitLab: The project you were looking for could not be found.

fatal: Could not read from remote repository.

Please make sure you have the correct access rights

and the repository exists.

fatal: clone of 'git@gitlab.haskell.org:tdammers/packages/Cabal.git' into submodule path

etc etc.

So:

• What is a reliable way to get a MR onto my machine to test?
• If I make a fix, what is the workflow to push that fix back to the author -- presumably I can’t push to their repo?

Thanks

Simon