diff --git a/.github/workflows/pre-build.yml b/.github/workflows/pre-build.yml
index 0254f34cc6f..dda2d01489a 100644
--- a/.github/workflows/pre-build.yml
+++ b/.github/workflows/pre-build.yml
@@ -23,29 +23,9 @@ jobs:
     timeout-minutes: ${{ inputs.timeout-minutes }}
     steps:
       # For normal PR jobs, just checkout the base_ref the PR is against
-      - uses: actions/checkout@v4
-        with: { fetch-depth: 1 }
-      # For normal PR jobs, just checkout the base_ref the PR is against
       - uses: actions/checkout@v4
         with:
           ref: ${{ github.base_ref }}
-        if: ${{ !(github.event_name == 'push' && github.repository != 'com-lihaoyi/mill') }}
-
-      # For fork push jobs, first checkout the version being pushed, then look for the
-      # merge-base where the current version forks off from the upstream main branch
-      - uses: actions/checkout@v4
-        with: { fetch-depth: 0 }
-        if: ${{ github.event_name == 'push' && github.repository != 'com-lihaoyi/mill' }}
-
-      - run: |
-          git fetch https://github.com/com-lihaoyi/mill main
-          MERGE_BASE=$(git merge-base FETCH_HEAD HEAD)
-          # pretty-print the path between the FETCH_HEAD (main), HEAD, and the merge-base
-          git log --graph --pretty=format:"%h %d %ar %s %n" --ancestry-path $MERGE_BASE^1..HEAD --ancestry-path $MERGE_BASE^1..FETCH_HEAD
-          
-          git checkout $MERGE_BASE
-        shell: bash
-        if: ${{ github.event_name == 'push' && github.repository != 'com-lihaoyi/mill' }}
 
       - run: echo temurin:${{ inputs.java-version }} > .mill-jvm-version
         shell: bash
@@ -53,25 +33,13 @@ jobs:
       - run: chmod -R 777 . # normalize permissions before and after upload/download-artifact
         shell: bash
 
-      - run: mkdir out && touch out/mill-selective-execution.json
-        shell: bash
-
-      - run: cat .mill-jvm-version
-        shell: bash
-
       - run: ./mill -i --debug -k selective.prepare ${{ inputs.prepareargs }}
-        if: ${{ (github.event_name == 'pull_request' && !contains(github.event.pull_request.labels.*.name, 'run-all-tests')) || github.repository != 'com-lihaoyi/mill' }}
-        shell: bash
 
 
       - run: cat out/mill-build/methodCodeHashSignatures.dest/current/4-methodCodeHashes.json | jq '.["build_.dist.package_$native$.$anonfun$executableRaw$8(os.Path,scala.collection.immutable.Seq,java.io.OutputStream)void"]'
-        shell: bash
       - run: cat out/mill-build/methodCodeHashSignatures.dest/current/7-transitiveCallGraphHashes.json  | jq '.["build_.dist.package_$native$.$anonfun$executableRaw$8(os.Path,scala.collection.immutable.Seq,java.io.OutputStream)void"]'
-        shell: bash
       - run: cat out/mill-build/methodCodeHashSignatures.json  | jq '.["value"]["build_.dist.package_$native$.$anonfun$executableRaw$8(os.Path,scala.collection.immutable.Seq,java.io.OutputStream)void"]'
-        shell: bash
       - run: cat out/mill-selective-execution.json  | jq '.["methodCodeHashSignatures"]["build_.dist.package_$native$.$anonfun$executableRaw$8(os.Path,scala.collection.immutable.Seq,java.io.OutputStream)void"]'
-        shell: bash
 
       - uses: actions/upload-artifact@v4.6.0
         with:
@@ -93,9 +61,9 @@ jobs:
           path: out/mill-selective-execution
           name: ${{ inputs.os }}-selective-execution-artifact
 
+      - run: git diff ${{ github.base_ref }}
       - run: mv out/mill-selective-execution/mill-selective-execution.json out/mill-selective-execution.json
-        shell: bash
-        
+
       - run: chmod -R 777 . # normalize permissions before and after upload/download-artifact
       - run: ./mill -i --debug -k selective.resolve 'example.javalib.basic[1-simple]._.server.test'
       - run: ./mill -i --debug -k selective.resolveTree 'example.javalib.basic[1-simple]._.server.test'