TEST list repo contents before restore; --debug; disable regular push CI

.github/workflows/populate-cache.yml

diff --git a/.github/workflows/populate-cache.yml b/.github/workflows/populate-cache.yml
index 0f35f97..1dbea9c 100644
--- a/.github/workflows/populate-cache.yml
+++ b/.github/workflows/populate-cache.yml
@@ -22,6 +22,7 @@
     branches:
       - master
       - ozone-1.4
+      - cache-debug
     paths:
       - 'pom.xml'
       - '**/pom.xml'
@@ -36,6 +37,10 @@
       - name: Checkout project
         uses: actions/checkout@v4
 
+      - name: List repo contents
+        run: find ~/.m2/repository -type f | sort | xargs ls -lh
+        continue-on-error: true
+
       - name: Restore cache for Maven dependencies
         id: restore-cache
         uses: actions/cache/restore@v4
@@ -58,7 +63,7 @@
 
       - name: Fetch dependencies
         if: steps.restore-cache.outputs.cache-hit != 'true'
-        run: mvn --batch-mode --fail-never --no-transfer-progress --show-version dependency:go-offline
+        run: mvn --batch-mode --fail-never --no-transfer-progress --show-version --debug dependency:go-offline
 
       - name: Delete Ozone jars from repo
         if: steps.restore-cache.outputs.cache-hit != 'true'

.github/workflows/post-commit.yml

diff --git a/.github/workflows/post-commit.yml b/.github/workflows/post-commit.yml
index 91d9e1f..05c5f01 100644
--- a/.github/workflows/post-commit.yml
+++ b/.github/workflows/post-commit.yml
@@ -16,7 +16,6 @@
 on:
   pull_request:
     types: [opened, ready_for_review, synchronize]
-  push:
 concurrency:
   group: ci-${{ github.event.pull_request.number || github.sha }}
   cancel-in-progress: ${{ github.event_name == 'pull_request' }}