the below solution has worked for me.
esxcli network firewall ruleset set -e true -r httpClient
esxcli software profile update -p ESXi-6.7.0-20181002001-standard \ -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml esxcli network firewall ruleset set -e false -r httpClient
esxcli network firewall ruleset set -e true -r httpClient esxcli software profile update -p ESXi-6.7.0-20181002001-standard \ -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml esxcli network firewall ruleset set -e false -r httpClient