add fixed-key functionality cross-repo

restore/action.yml

@@ -44,11 +44,31 @@ runs:
         else
           echo "stash_exists=false" >> $GITHUB_OUTPUT
         fi
+    - name: Check across repo 
+      if: ${{ ! steps.check-stash.outputs.stash_name }}
+      shell: bash
+      run: |
+        gh api \
+          -H "Accept: application/vnd.github+json" \
+          -H "X-GitHub-Api-Version: 2022-11-28" \
+          -f name=${{ inputs.key }} \
+          --method=get \
+          /repos/${{ github.repository }}/actions/artifacts > res.json
+        
+        stash_name=$(jq '.artifacts
+                          | map(select(.name | test ("${{ inputs.key }}")))
+                          | max_by(.updated_at)
+                          | .name // empty' res.json)
 
+        if [ -z "$stash_name" ]; then
+          echo "stash_name=$stash_name" >> $GITHUB_OUTPUT
+        else
+          exit 1 
+        fi
     - name: Download Stash from current workflow
-      if: ${{ steps.check-stash.outputs.stash_exists }}
       id: upload
       uses: actions/download-artifact@v4
       with:
         name: ${{ steps.check-stash.outputs.stash_name || inputs.key }}
         path: ${{ inputs.path }}
+        token: ${{ inputs.token }}