How to get hourly Top Campaign Content Report

Hi,
We're trying to get hourly report data for campaign items (similar to getting campaign-summary with dimensions "campaign_hour_breakdown", but for item), but it doesn't seems to work- when i'm trying do api call to "reports/top-campaign-content" with start_date and end_date in the format yyyy-mm-ddThh:mm:ss it looks like the api ignores the hours.

If it's not supported, there is a workaround?

Thanks in advance
Avishay