Update monitor-homebrew.yml

.github/workflows/monitor-homebrew.yml

@@ -16,27 +16,34 @@ jobs:
     - name: Fetch released version of Chapel formula
       run: |
         curl -o hb_master_chapel.rb https://raw.githubusercontent.com/homebrew/homebrew-core/master/Formula/c/chapel.rb
+        FILE_HASH=$(sha256sum hb_master_chapel.rb | awk '{ print $1 }')
+        HASH_SUBSTRING=${FILE_HASH:0:7}
+        echo "FILE_HASH=$FILE_HASH" >> $GITHUB_ENV
+        echo "HASH_SUBSTRING=$HASH_SUBSTRING" >> $GITHUB_ENV
+        
     - name: Compare the released version with the chapel-release.rb
       id: compare
       run: |
         if ! cmp -s hb_master_chapel.rb util/packaging/homebrew/chapel-release.rb; then
           echo "file_changed=true" >> $GITHUB_ENV          
         else
           echo "file_changed=false" >> $GITHUB_ENV
-        fi
+        fi        
+        
     - name: Create a new branch if file has changed      
       if: ${{ env.file_changed == 'true' }}      
       run: |
         git config --global user.email "[email protected]"
         git config --global user.name "github action"
-        git checkout -b update-chapel-homebrew-release
+        git checkout -b update-chapel-homebrew-release-${{ env.HASH_SUBSTRING }}
         mv hb_master_chapel.rb util/packaging/homebrew/chapel-release.rb
         git add util/packaging/homebrew/chapel-release.rb
         git commit -m "Update chapel-main.rb with changes from chapel.rb"
         git push --set-upstream origin update-chapel-homebrew-release
-        echo "Homebrew has updated the formula!"        
+        echo "Homebrew has updated the formula!"   
+        
     - name: create pull request
-      run: gh pr create -B main -H update-chapel-homebrew-release --title 'Update our copy of the released Homebrew formula' --body 'Created by Github action'
+      run: gh pr create -B main -H update-chapel-homebrew-release-${{ env.HASH_SUBSTRING }} --title 'Update our copy of the released Homebrew formula' --body 'Created by Github action'
       env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}