From 736d32cb8d30ddedef07db95b35431783fe66f52 Mon Sep 17 00:00:00 2001
From: Doug Hellmann <dhellmann@redhat.com>
Date: Thu, 15 Dec 2022 16:11:08 -0500
Subject: [PATCH] save last image references so it is easy to reproduce the
 rebase

Signed-off-by: Doug Hellmann <dhellmann@redhat.com>
---
 scripts/auto-rebase/rebase.sh | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/scripts/auto-rebase/rebase.sh b/scripts/auto-rebase/rebase.sh
index 2afe50b0bf..b5897a8bd9 100755
--- a/scripts/auto-rebase/rebase.sh
+++ b/scripts/auto-rebase/rebase.sh
@@ -137,6 +137,28 @@ replace_using_component_commit() {
     fi
 }
 
+# Updates a script to record the last rebase that was run to make it
+# easier to reproduce issues and to test changes to the rebase script
+# against the same set of images.
+update_last_rebase() {
+    local release_image_amd64=$1
+    local release_image_arm64=$2
+
+    title "## updating last_rebase.sh"
+
+    local last_rebase_script="${REPOROOT}/scripts/auto-rebase/last_rebase.sh"
+
+    cat - >"${last_rebase_script}" <<EOF
+#!/bin/bash -x
+./scripts/auto-rebase/rebase.sh to "${release_image_amd64}" "${release_image_arm64}"
+EOF
+    chmod +x "${last_rebase_script}"
+
+    (cd "${REPOROOT}" && \
+         git add scripts/auto-rebase/last_rebase.sh && \
+         git commit -m "update last_rebase.sh")
+}
+
 # Updates the ReplaceDirective for an old ${modulepath} with the new modulepath
 # and version as per the staged checkout of ${component}.
 update_modulepath_version_from_release() {
@@ -646,6 +668,8 @@ rebase_to() {
     git branch -D "${rebase_branch}" || true
     git checkout -b "${rebase_branch}"
 
+    update_last_rebase "${release_image_amd64}" "${release_image_arm64}"
+
     update_go_mod
     go mod tidy
     if [[ -n "$(git status -s go.mod go.sum)" ]]; then