[am9zZWY]

Assisted By: Claude Opus 5

extra_data["headers"] is usually the V2_ACCEPT_HEADERS constant, and headers.update(auth_headers) mutated it in place. The first token negotiated in a process leaked into every later request, including those to other registries.

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[patchback]

Backport to 2.19: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.19/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2610

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[patchback]

Backport to 2.26: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.26/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2609

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my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 2.22: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.22/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2608

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 2.20: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.20/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2607

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I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 2.24: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.24/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2611

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I'm built with octomachinery and
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[patchback]

Backport to 2.27: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.27/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2612

🤖 @patchback
I'm built with octomachinery and
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[patchback]

Backport to 2.29: 💚 backport PR created

✅ Backport PR branch: patchback/backports/2.29/5010124a3efacdef0b5a4dc9a077c3273f14f86f/pr-2595

Backported as #2613

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I'm built with octomachinery and
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