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Seinzu
Oct 13, 2025

How are you running Renovate?

A Mend.io-hosted app

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

No response

Please tell us more about your question or problem

We have a renovate setup with rebaseWhen: 'conflicted' but we are noticing a large number of rebases on some branches (often as much as 1 rebase every time renovate runs on the repo) even without any changes to the target branch. I have what seems to be a good reproduction here: https://github.com/Seinzu/renovate-issue-repro.

I've noticed in the logs (see attached) that the PR is failing a cache fingerprinting step which is causing it to be rebuilt. This is not ideal for us as it causes us to spend a lot of resources on rebuilding these branches very regularly. Is this expected behaviour? Is there a configuration option that will help us avoid these rebuilds?

Logs (if relevant)

Logs 

DEBUG: syncBranchState() (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: syncBranchState(): update baseBranchSha (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: branch.isUpToDate(): needs recalculation (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: getBranchPr(renovate-npm-nodemailer-vulnerability) (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: findPr(renovate-npm-nodemailer-vulnerability, undefined, open) (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: Found PR #3 (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: branchExists=true (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: dependencyDashboardCheck=undefined (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: PR rebase requested=false (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: Open PR Count: 1, Existing Branch Count: 1, Hourly PR Count: 0 (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: Checking if PR has been edited (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: branch.isModified(): using cached result "false" (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: Found existing branch PR (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: Checking schedule(schedule=, tz=null, now=2025-10-13T11:17:09.913Z) (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: No schedule defined (branch="renovate-npm-nodemailer-vulnerability")
DEBUG: Cache fingerprint does not match, cannot reuse existing branch (branch="renovate-npm-nodemailer-vulnerability")
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Answered by RahulGautamSingh Oct 14, 2025

This seems to be only happening with vulnerability PRs

Issue created: #38599

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Replies: 1 comment

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RahulGautamSingh
Oct 14, 2025
Collaborator

This seems to be only happening with vulnerability PRs

Issue created: #38599
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Answer selected by RahulGautamSingh
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