Please change your references to https://gitlab.wikimedia.org/repos/sre/conftool.
In your own copy of the repository, switch as follows:
1 - Change the git remote url: git remote set-url origin git@gitlab.wikimedia.org:repos/sre/conftool.git
2 - Switch to the main branch from your master one: git checkout master; git switch -c main
3 - Set the new branch to follow the upstream main: git branch --set-upstream-to=origin/main main
For any additional issues, please refer to the task https://phabricator.wikimedia.org/T369594