curl & insightiq https

How do I add a security cert from an insightiq install to cert chain to allow curl authentication ?

See

  CApath: none
* Server certificate:
*       subject: CN=InsightIQ,O=dellemc
*       start date: Dec 02 14:40:45 2024 GMT
*       expire date: Mar 02 14:41:15 2025 GMT
*       common name: InsightIQ
*       issuer: E=support@emc.com,CN=InsightIQ Root CA,OU=Storage,O=DELL EMC,L=Round Rock,ST=TX,C=US
* NSS error -8179 (SEC_ERROR_UNKNOWN_ISSUER)
* Peer's Certificate issuer is not recognized.