Prepare to build releases from branches

.github/workflows/release-vscode-extension.yml

@@ -11,6 +11,11 @@ on:
         description: For example "RC1"
         required: true
         type: string
+      ref:
+        description: Git branch, tag, commit hash
+        required: false
+        default: 'main'
+        type: string
 
 permissions:
   contents: write
@@ -24,6 +29,7 @@ jobs:
       - name: Checkout vscode-extension '${{ inputs.extension-name }}'
         uses: actions/checkout@v4
         with:
+          ref: ${{ inputs.ref }}
           sparse-checkout: |
             vscode-extensions/${{ inputs.extension-name }}
       - name: Record Extension Version
@@ -50,4 +56,5 @@ jobs:
     with:
       extension-name: ${{ inputs.extension-name }}
       dist: 'release'
+      ref: ${{ inputs.ref }}
     secrets: inherit