Not able to proxy Helm repository running on Azure Container Registry

→ curl -v https://promitor.azurecr.io/helm/v1/repo/index.yaml
*   Trying 13.69.64.95...
* TCP_NODELAY set
* Connected to promitor.azurecr.io (RESTRICTED_IP) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/cert.pem
  CApath: none
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
*  subject: CN=*.azurecr.io
*  start date: May  2 16:59:03 2020 GMT
*  expire date: May 16 16:59:03 2020 GMT
*  subjectAltName: host "promitor.azurecr.io" matched cert's "*.azurecr.io"
*  issuer: C=US; ST=California; O=Zscaler Inc.; OU=Zscaler Inc.; CN=Zscaler Intermediate Root CA (zscaler.net) (t)
*  SSL certificate verify ok.
> GET /helm/v1/repo/index.yaml HTTP/1.1
> Host: promitor.azurecr.io
> User-Agent: curl/7.54.0
> Accept: */*
>
< HTTP/1.1 307 Temporary Redirect
< Server: openresty
< Date: Mon, 04 May 2020 20:30:06 GMT
< Content-Type: text/html; charset=utf-8
< Content-Length: 417
< Connection: keep-alive
< Access-Control-Expose-Headers: Docker-Content-Digest
< Access-Control-Expose-Headers: WWW-Authenticate
< Access-Control-Expose-Headers: Link
< Access-Control-Expose-Headers: X-Ms-Correlation-Request-Id
< Docker-Distribution-Api-Version: registry/2.0
< Location: https://weumanaged19.blob.core.windows.net/2d0d994199874e139a3800c72a530625-artifact-nkxe60asba//docker/registry/v2/blobs/sha256/02/025f506bfc4065f9d6814973a83b27e47ee564480e18495fedb69ff385ac003c/data?se=2020-05-04T20%3A50%3A06Z&sig=4%2FKK1kP5vKJzA8BWywuX9KGHzmVPNZfhkSN%2FqGQKNGs%3D&sp=r&sr=b&sv=2016-05-31&regid=2d0d994199874e139a3800c72a530625&anon=true
< Strict-Transport-Security: max-age=31536000; includeSubDomains
< X-Content-Type-Options: nosniff
< X-Ms-Correlation-Request-Id: 8e24d753-aa4a-4fc8-ae94-bf278f4f392f
< Strict-Transport-Security: max-age=31536000; includeSubDomains
<
<a href="https://weumanaged19.blob.core.windows.net/2d0d994199874e139a3800c72a530625-artifact-nkxe60asba//docker/registry/v2/blobs/sha256/02/025f506bfc4065f9d6814973a83b27e47ee564480e18495fedb69ff385ac003c/data?se=2020-05-04T20%3A50%3A06Z&amp;sig=4%2FKK1kP5vKJzA8BWywuX9KGHzmVPNZfhkSN%2FqGQKNGs%3D&amp;sp=r&amp;sr=b&amp;sv=2016-05-31&amp;regid=2d0d994199874e139a3800c72a530625&amp;anon=true">Temporary Redirect</a>.

* Connection #0 to host promitor.azurecr.io left intact

→ curl https://helmcenterstg.jfrog.io/artifactory/promitor-remote/index.yaml
{
  "errors" : [ {
    "status" : 404,
    "message" : "Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature."
  } ]
}%