diff --git a/.github/workflows/mirror_noir_subrepo.yml b/.github/workflows/mirror_noir_subrepo.yml
index eaec104ed72..9dc20b3cdb1 100644
--- a/.github/workflows/mirror_noir_subrepo.yml
+++ b/.github/workflows/mirror_noir_subrepo.yml
@@ -6,6 +6,7 @@ name: Mirror to noir repo
 # Don't allow multiple of these running at once:
 concurrency:
   group: ${{ github.workflow }}
+  cancel-in-progress: false
 on:
   push:
     branches:
@@ -19,6 +20,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Get noir master's last sync commit
+        id: last_merge_hash
+        uses: actions/github-script@v7
+        with:
+          script: |
+            // NOTE: more robust heuristic needed if aztecbot opens different kinds of PRs
+            const response = await github.rest.search.commits({
+              q: 'author:AztecBot committer:web-flow repo:noir-lang/noir sort:committer-date'
+            });
+            console.log(response.data.items);
+            return response.data.items[0].sha;
+
       - name: Checkout
         uses: actions/checkout@v3
         with:
@@ -26,38 +39,59 @@ jobs:
           token: ${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}
 
       # We push using git subrepo (https://github.com/ingydotnet/git-subrepo)
-      # with some logic to recover from squashed parent commits
-      # We push to subrepo, commit to master. The commit is needed
-      # to continue to replay. If we still hit issues such as this
-      # action failing due to upstream changes, a manual resolution
-      # PR with ./scripts/git_subrepo.sh pull will be needed.
+      # and push all Aztec commits as a single commit with metadata.
       - name: Push to branch
         run: |
+          set -xue # print commands
+          # Enable gh executable. We spread out the API requests between the github actions bot token, and aztecbot
+          export GH_TOKEN="${{ secrets.GITHUB_TOKEN }}"
           SUBREPO_PATH=noir
           BRANCH=aztec-packages
           # identify ourselves, needed to commit
           git config --global user.name AztecBot
           git config --global user.email tech@aztecprotocol.com
-          if ./scripts/git_subrepo.sh push $SUBREPO_PATH --branch=$BRANCH; then
-            git commit --amend -m "$(git log -1 --pretty=%B) [skip ci]"
+          BASE_NOIR_COMMIT=`git config --file=noir/.gitrepo subrepo.commit`
+          BASE_AZTEC_COMMIT=`git config --file=noir/.gitrepo subrepo.parent`
+          # Fix PR branch
+          git clone https://x-access-token:${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}@github.com/noir-lang/noir.git noir-repo
+          cd noir-repo
+          git checkout $BRANCH || git checkout -b $BRANCH
+          git reset --hard "$BASE_NOIR_COMMIT"
+          # Reset our branch to our expected target
+          git push origin $BRANCH --force
+          cd ..
+          # Get the last sync PR's last commit state
+          LAST_MERGED_PR_HASH=`gh pr list --repo=noir-lang/noir --state merged --head aztec-packages  --json headRefOid --jq=.[0].headRefOid`
+          # Use a commit heuristic where we look at when .gitrepo first started to look at that commit state (through a push)
+          COMMIT_HEURISTIC=$(git log -p -S"$LAST_MERGED_PR_HASH" --reverse --source --  noir/.gitrepo | grep -m 1 '^commit'  | awk '{print $2}' || true)
+          if [[ " $COMMIT_HEURISTIC" = "" ]] ; then
+            # It it fails, just use our gitrepo parent commit (last time we pushed or pulled)
+            COMMIT_HEURISTIC=$BASE_AZTEC_COMMIT
+          fi
+          # Create a filtered git log for release-please changelog / metadata
+          MESSAGE=$(git log --pretty=format:"%s" $COMMIT_HEURISTIC..HEAD -- noir/  ':!noir/.gitrepo' | grep -v 'git subrepo' || true)
+          # Fix Aztec PR links
+          MESSAGE=$(echo "$MESSAGE" | sed -E 's/\(#([0-9]+)\)/(https:\/\/github.com\/AztecProtocol\/aztec-packages\/pull\/\1)/g')
+          git commit --allow-empty -m"chore: Sync to noir-lang/noir" -m"$MESSAGE"
+          COMMIT=$(git rev-parse HEAD)
+          # Now push to it with subrepo with computed commit messages
+          if ./scripts/git_subrepo.sh push $SUBREPO_PATH --squash --branch=$BRANCH; then
+            git reset $COMMIT
+            git commit --amend -am "$(git log -1 --pretty=%B) [skip ci]"
             git push
           else
             echo "Problems syncing noir. We may need to pull the subrepo."
             exit 1
           fi
-
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-          repository: noir-lang/noir
-          token: ${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}
-      - name: Create PR for Aztec Branch
-        continue-on-error: true
-        uses: repo-sync/pull-request@v2
-        with:
-          github_token: ${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}
-          pr_title: 'feat: Sync commits from `aztec-packages`'
-          pr_body: 'Development from [aztec-packages](https://github.com/AztecProtocol/aztec-packages).'
-          destination_branch: 'master'
-          source_branch: 'aztec-packages'
+          # Formatted for updating the PR, overrides for release-please commit message parsing 
+          PR_BODY="""BEGIN_COMMIT_OVERRIDE
+          $MESSAGE
+          END_COMMIT_OVERRIDE"""
+          PR_URL=$(gh pr list --repo noir-lang/noir --head aztec-packages --json url --jq ".[0].url")
+          # for cross-opening PR in noir repo, we use aztecbot's token
+          export GH_TOKEN=${{ secrets.AZTEC_BOT_GITHUB_TOKEN }}
+          if [[ "$PR_URL" == "" ]]; then
+            gh pr create --repo noir-lang/noir --title "feat: Sync from aztec-packages" --body "$PR_BODY" --base master --head aztec-packages
+          else
+            gh pr edit "$PR_URL" --body "$PR_BODY"
+          fi
diff --git a/scripts/git-subrepo/Intro.pod b/scripts/git-subrepo/Intro.pod
index a4d30716cc0..656c5f32e0a 100644
--- a/scripts/git-subrepo/Intro.pod
+++ b/scripts/git-subrepo/Intro.pod
@@ -78,7 +78,7 @@ Submodules tend to receive a lot of bad press. Here's some of it:
 
 =item * L<http://ayende.com/blog/4746/the-problem-with-git-submodules>
 
-=item * L<http://somethingsinistral.net/blog/git-submodules-are-probably-not-the-answer/>
+=item * L<https://web.archive.org/web/20171101202911/http://somethingsinistral.net/blog/git-submodules-are-probably-not-the-answer/>
 
 =item * L<http://codingkilledthecat.wordpress.com/2012/04/28/why-your-company-shouldnt-use-git-submodules/>
 
diff --git a/scripts/git-subrepo/doc/intro-to-subrepo.swim b/scripts/git-subrepo/doc/intro-to-subrepo.swim
index b4524ed21b0..286663159ed 100644
--- a/scripts/git-subrepo/doc/intro-to-subrepo.swim
+++ b/scripts/git-subrepo/doc/intro-to-subrepo.swim
@@ -61,7 +61,7 @@ article is about.
 Submodules tend to receive a lot of bad press. Here's some of it:
 
 * http://ayende.com/blog/4746/the-problem-with-git-submodules
-* http://somethingsinistral.net/blog/git-submodules-are-probably-not-the-answer/
+* https://web.archive.org/web/20171101202911/http://somethingsinistral.net/blog/git-submodules-are-probably-not-the-answer/
 * http://codingkilledthecat.wordpress.com/2012/04/28/why-your-company-shouldnt-use-git-submodules/
 
 A quick recap of some of the good and bad things about submodules:
diff --git a/scripts/git-subrepo/ext/bashplus/bin/bash+ b/scripts/git-subrepo/ext/bashplus/bin/bash+
index e0bc1f73913..a691460242d 100755
--- a/scripts/git-subrepo/ext/bashplus/bin/bash+
+++ b/scripts/git-subrepo/ext/bashplus/bin/bash+
@@ -5,7 +5,7 @@
 # Copyright (c) 2013-2020 Ingy döt Net
 #------------------------------------------------------------------------------
 
-set -eu
+set -e
 shopt -s compat31 &>/dev/null || true
 
 #------------------------------------------------------------------------------
diff --git a/scripts/git-subrepo/ext/bashplus/lib/bash+.bash b/scripts/git-subrepo/ext/bashplus/lib/bash+.bash
index b52e17b55a6..dccdac08376 100644
--- a/scripts/git-subrepo/ext/bashplus/lib/bash+.bash
+++ b/scripts/git-subrepo/ext/bashplus/lib/bash+.bash
@@ -2,7 +2,7 @@
 #
 # Copyright (c) 2013-2020 Ingy döt Net
 
-set -eu
+set -e
 
 [[ ${BASHPLUS_VERSION-} ]] && return 0
 
diff --git a/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/bin/bash+ b/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/bin/bash+
index e0bc1f73913..a691460242d 100755
--- a/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/bin/bash+
+++ b/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/bin/bash+
@@ -5,7 +5,7 @@
 # Copyright (c) 2013-2020 Ingy döt Net
 #------------------------------------------------------------------------------
 
-set -eu
+set -e
 shopt -s compat31 &>/dev/null || true
 
 #------------------------------------------------------------------------------
diff --git a/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/lib/bash+.bash b/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/lib/bash+.bash
index e0e15cfc49d..2e1a70c2079 100644
--- a/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/lib/bash+.bash
+++ b/scripts/git-subrepo/ext/test-more-bash/ext/bashplus/lib/bash+.bash
@@ -2,7 +2,7 @@
 #
 # Copyright (c) 2013-2020 Ingy döt Net
 
-set -eu
+set -e
 
 [[ ${BASHPLUS_VERSION-} ]] && return 0
 
diff --git a/scripts/git-subrepo/lib/git-subrepo.d/help-functions.bash b/scripts/git-subrepo/lib/git-subrepo.d/help-functions.bash
index 98e34dd272b..123bb54cbb5 100644
--- a/scripts/git-subrepo/lib/git-subrepo.d/help-functions.bash
+++ b/scripts/git-subrepo/lib/git-subrepo.d/help-functions.bash
@@ -2,7 +2,7 @@
 
 # DO NOT EDIT. This file generated by pkg/bin/generate-help-functions.pl.
 
-set -eu
+set -e
 
 help:all() {
     cat <<'...'
diff --git a/scripts/git-subrepo/note/init-test b/scripts/git-subrepo/note/init-test
index 810dae14a4d..a20854de88a 100755
--- a/scripts/git-subrepo/note/init-test
+++ b/scripts/git-subrepo/note/init-test
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 set -ex
 cat $0    # Show this script in the output
diff --git a/scripts/git-subrepo/note/recreate-rebase-conflict.sh b/scripts/git-subrepo/note/recreate-rebase-conflict.sh
index 6dc0a51e300..21bf8365b75 100644
--- a/scripts/git-subrepo/note/recreate-rebase-conflict.sh
+++ b/scripts/git-subrepo/note/recreate-rebase-conflict.sh
@@ -1,6 +1,6 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
-set -eu
+set -e
 set -x
 
 # Make a directory to work in:
diff --git a/scripts/git-subrepo/note/subtree-rebase-fail-example/test.bash b/scripts/git-subrepo/note/subtree-rebase-fail-example/test.bash
index 9118236848a..df8b818cee6 100755
--- a/scripts/git-subrepo/note/subtree-rebase-fail-example/test.bash
+++ b/scripts/git-subrepo/note/subtree-rebase-fail-example/test.bash
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 set -ex
 
@@ -24,6 +24,6 @@ git clone repo1 repo3
   git subrepo clone ../repo2 subrepo
   bash
   git rebase -i HEAD^
-  git log -p
+  git log -p 
   ls
 )
diff --git a/scripts/git-subrepo/note/test-subrepo-push.sh b/scripts/git-subrepo/note/test-subrepo-push.sh
index 13b76e47fc8..afceb5efa92 100644
--- a/scripts/git-subrepo/note/test-subrepo-push.sh
+++ b/scripts/git-subrepo/note/test-subrepo-push.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 set -ex
 
diff --git a/scripts/git-subrepo/note/test.sh b/scripts/git-subrepo/note/test.sh
index d27548f0937..fae278795d1 100755
--- a/scripts/git-subrepo/note/test.sh
+++ b/scripts/git-subrepo/note/test.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 set -x
 
diff --git a/scripts/git-subrepo/pkg/bin/generate-help-functions.pl b/scripts/git-subrepo/pkg/bin/generate-help-functions.pl
index 5dd949e6ed9..40b6af8f2b3 100644
--- a/scripts/git-subrepo/pkg/bin/generate-help-functions.pl
+++ b/scripts/git-subrepo/pkg/bin/generate-help-functions.pl
@@ -33,7 +33,7 @@ sub write_start {
 
 # DO NOT EDIT. This file generated by pkg/bin/generate-help-functions.pl.
 
-set -eu
+set -e
 ...
 }