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fix(t27b-lab): a clone that cannot check out is cloned again - #6220
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After the 2026-10-04 redeploy the lab's checkout of bae81ae failed on its partial clone ("could not fetch ... from promisor remote") and checkout() had no second try. It now removes the clone and clones once more; steps.checkout records clone kept/recloned and the first error. New CI step in loop-tools-gate; master's checkout fails the same case. Census: shell.txt run steps 284 -> 285 (runner bash 263 -> 264) -- the one new loop-tools-gate step above (rule Q12). Closes #6219 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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This was referenced Oct 4, 2026
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Closes #6219. Refs #6063.
After the owner's redeploy on 2026-10-04 ~17:55Z, the lab's first run at bae81ae failed at checkout with
fatal: could not fetch 737282229a... from promisor remote.lab.checkout()had no second try, so a broken partial clone on the volume would fail every later poll.Change
checkout()tries once. On a failed fetch or checkout it removes the clone and clones again, once.steps.checkoutnow recordsclone: keptorclone: reclonedplusfirst_error, so a heal is visible in the run.Evidence
scripts/ci/test_the_t27b_lab_heals_its_clone.py: 4/4 ok. It uses local file:// repos and no network.lab.pyfails (the checkout raisesgit fetch failed).shell.txtrun steps 284 -> 285, from the one new step.Note
This takes effect only after the next lab redeploy, which is the owner's decision.
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