The code is checking for Ref and my repo is made with ref. This could be a difference between version 0.0.1 and 0.0.2 of the protocol. --- I made this quick python hack to show some addresses that have made repositories using graphql, copying from the source. It queries for transactions of Type: update-ref, and returns their owner addresses.
import requests; requests.post('https://arweave.net/graphql', json={'query': 'query { transactions( tags: [ { name: "Type", values: ["update-ref"] } ] ) { edges { node { owner { address } } } } }'}).json()
{'data': {'transactions': {'edges': [{'node': {'owner': {'address': '4LfIQQHyZvsCjTt-EOm4q6S-SvWLdQCh3cDD2-R3wp8'}}}, {'node': {'owner': {'address': '4LfIQQHyZvsCjTt-EOm4q6S-SvWLdQCh3cDD2-R3wp8'}}}, {'node': {'owner': {'address': 'qBRa782iJ4Nry0apjK0svfIJK-X_7mppep7bnDOH6_g'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}, {'node': {'owner': {'address': 'BPr7vrFduuQqqVMu_tftxsScTKUq9ke0rx4q5C9ieQU'}}}]}}}