return existed fingerprint hash
return existed fingerprint hash

nadnoslen/broccoli-asset-rev,dollarshaveclub/broccoli-asset-rev,rickharrison/broccoli-asset-rev,kevinlondon/broccoli-asset-rev,stefanpenner/broccoli-asset-rev,joliss/broccoli-asset-rev,elucid/broccoli-asset-rev