Why:
Gitea Docker runners inject an HTTP server URL, while ordinary transport rules intentionally reject HTTP sources.
Evidence:
SELF observed the fixed-runner failure, added a real local Git clone regression with RED then GREEN, and passed 31 transport/composition cases.
Impact:
Accept only inherited mirror aliases matching the injected server, owner and repository; keep configured HTTP sources, credentials and foreign aliases rejected without global Git changes.
Refs:
R7-R8, R14; dependency-workspace U5; Dev PR 537 runs 3029/3030
weichen
63ba0d4097