claude-code - 💡(How to fix) Fix Model fills in anthropics as owner for `owner/repo#N` references instead of resolving the current repo [1 participants]

Summary

When following the system-prompt instruction to format GitHub references as owner/repo#123 (introduced for the v2.1.84 linkification change, see #39114), the model frequently emits a guessed owner instead of resolving the actual owner of the current repo. The result is broken / non-clickable links.

This is distinct from the compaction-related context-loss bugs (e.g. #15169 → #10960, #14968, #13678): no compaction is required to reproduce.

Reproduction

1. Open Claude Code in any repository whose owner is not anthropics.
2. Fresh session, no compaction.
3. Ask: "what are open PRs".
4. The model lists PRs and may format them as anthropics/<repo>#<N> (or another guessed owner) instead of <actual-owner>/<repo>#<N>.

In my session the repo was owned by a non-anthropics org and the model emitted anthropics/<repo>#<N> for every PR.

Root cause (hypothesis)

The instruction tells the model what format to use but does not require it to resolve the owner first. The example in the instruction text uses a real owner (anthropics/claude-code#100), which may further anchor the guess — but the underlying issue is the missing verification step, not the example itself.

Suggested fix

Any of:

1. Add an explicit verification step to the instruction, e.g. "Before formatting a GitHub reference, resolve the current repo owner via gh repo view --json nameWithOwner or the git remote."
2. Have the harness resolve nameWithOwner once at session start and surface it in the environment block, so the model has it without a tool call.
3. Change the example to a neutral placeholder (owner/repo#123) to remove any anchoring effect.

(1) or (2) addresses the root cause; (3) is cosmetic and only helps if the anchoring hypothesis is real.

Environment

• Claude Code (Opus 4.6)
• Fresh session, no compaction
• Repo owner != anthropics

🤖 90% Claude