Update package workflow to reference v3.0.1

The GitHub actions workflow has been updated to pull from branch v3.0.1 instead of main. This change affects the commit verification and version setting steps, now using version 3.0.1-preview in the workflow process.

.github/workflows/packages.yml

@@ -3,7 +3,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - main
+      - v3.0.1
   release:
     types: [ prereleased, published ]
 env:
@@ -18,10 +18,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Verify commit exists in origin/main
+      - name: Verify commit exists in origin/v3.0.1
         run: |
           git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
-          git branch --remote --contains | grep origin/main
+          git branch --remote --contains | grep origin/v3.0.1
       - name: Set VERSION variable
         run: |
           if [[ "${{ github.ref }}" == refs/tags/* && "${{ github.event_name }}" == "release" && "${{ github.event.action }}" == "published" ]]; then
@@ -29,7 +29,7 @@ jobs:
             TAG_NAME=${TAG_NAME#refs/tags/} # remove the refs/tags/ prefix
             echo "VERSION=${TAG_NAME}" >> $GITHUB_ENV
           else
-            echo "VERSION=3.1.0-preview.${{github.run_number}}" >> $GITHUB_ENV
+            echo "VERSION=3.0.1-preview.${{github.run_number}}" >> $GITHUB_ENV
           fi
       - name: Build
         run: dotnet build --configuration Release /p:Version=${VERSION}