From 5755a4545cf2787200ab9fce17e470db7c8bd9bb Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 5 Mar 2026 15:36:32 +0000
Subject: [PATCH 1/3] Initial plan


From bbc144e80815ffda04007886b879e2ff89e49189 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 5 Mar 2026 15:38:20 +0000
Subject: [PATCH 2/3] docs: document DCO sign-off requirement in
 CONTRIBUTING.md

Co-authored-by: jaydeluca <7630696+jaydeluca@users.noreply.github.com>
---
 CONTRIBUTING.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2abbd91e2..9e5fe98ca 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,6 +12,30 @@ Prometheus uses GitHub to manage reviews of pull requests.
   This will avoid unnecessary work and surely give you and us a good deal
   of inspiration.
 
+## Signing Off Commits
+
+Every commit must include a `Signed-off-by` line, as required by the
+[Developer Certificate of Origin (DCO)](https://developercertificate.org/).
+
+Sign off each commit by passing `--signoff` (or `-s`) to `git commit`:
+
+```bash
+git commit --signoff -m "Your commit message"
+```
+
+If you have already created commits without a sign-off, you can retroactively
+add it by rebasing (replace `N` with the number of commits to sign off):
+
+```bash
+git rebase --signoff HEAD~N
+```
+
+Then force-push the branch:
+
+```bash
+git push --force-with-lease
+```
+
 ## Formatting
 
 This repository uses [Google Java Format](https://github.com/google/google-java-format) to format

From ed49d56594108d78949b5a90f0b7cb2429089313 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 5 Mar 2026 15:57:46 +0000
Subject: [PATCH 3/3] docs: add amend tip and improve sign-off remediation
 instructions

Co-authored-by: jaydeluca <7630696+jaydeluca@users.noreply.github.com>
---
 CONTRIBUTING.md | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9e5fe98ca..1e478f0dc 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -23,8 +23,13 @@ Sign off each commit by passing `--signoff` (or `-s`) to `git commit`:
 git commit --signoff -m "Your commit message"
 ```
 
-If you have already created commits without a sign-off, you can retroactively
-add it by rebasing (replace `N` with the number of commits to sign off):
+To sign off only the most recent commit, use `--amend`:
+
+```bash
+git commit --amend --signoff --no-edit
+```
+
+To sign off multiple commits, rebase (replace `N` with the number of commits):
 
 ```bash
 git rebase --signoff HEAD~N