Weird copr-ping failure - race in CloudFront?

[praiskup]

Import error has failed with:

Downloading https://download.copr.fedorainfracloud.org/results/@copr/copr-ping/srpm-builds/07112483/buildtag-0-0.src.rpm
Starting new HTTPS connection (1): download.copr.fedorainfracloud.org:443
https://download.copr.fedorainfracloud.org:443 "GET /results/@copr/copr-ping/srpm-builds/07112483/buildtag-0-0.src.rpm HTTP/1.1" 404 341
Exception raised during package import.
Traceback (most recent call last):
  File "/usr/lib/python3.12/site-packages/copr_dist_git/helpers.py", line 172, in download_file
    r = request.send(url, method='get', stream=True)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/copr_common/request.py", line 49, in send
    return self._send_request_repeatedly(url, method=method, data=data,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/copr_common/request.py", line 107, in _send_request_repeatedly
    return self._send_request(url, method=method, data=data,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/copr_common/request.py", line 83, in _send_request
    raise RequestError(
copr_common.request.RequestError: Request client error on https://download.copr.fedorainfracloud.org/results/@copr/copr-ping/srpm-builds/07112483/buildtag-0-0.src.rpm: 404 Not Found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.12/site-packages/copr_dist_git/importer.py", line 79, in do_import
    srpm_path = helpers.download_file(
                ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/copr_dist_git/helpers.py", line 174, in download_file
    raise FileDownloadException(str(e))
copr_dist_git.exceptions.FileDownloadException: Request client error on https://download.copr.fedorainfracloud.org/results/@copr/copr-ping/srpm-builds/07112483/buildtag-0-0.src.rpm: 404 Not Found
sending a response for task {'build_id': 7112483}
Sending back: 
{"build_id": 7112483}
Starting new HTTPS connection (1): copr.fedorainfracloud.org:443
https://copr.fedorainfracloud.org:443 "POST /backend/import-completed/ HTTP/1.1" 200 17

But the source build succeeded, and the RPM exists now. Perhaps we are marking the job "importing" too soon?