_reindex call - Access current object in destination


During reindex call is it possible to access current object in destination that is going to be overridden?

What I'm trying to achieve is this:

POST _reindex
  "source": {
    "remote": {
      "host": "https://example.com:443"
    "index": ["index-2019.03.30", "index-2019.03.27", "index-2019.03.28"],
    "query": {
      "match_all": {}
  "dest": {
    "index": "my-index-new"
    "script": {
    "source": "if (ctx._source.timestamp < current_object_in_dest._source.timestamp) {ctx.op = 'noop'}",
    "lang": "painless"

If no is there some other way to query destination from reindex script?

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