Można to zrobić tak:

1. Open SCCM Client Center.
2. Enter the SCCM Client computer name and connect to the client (top left hand corner of SCCM Client Center).
3. Click Agent Actions.
4. Click the Cache tab.
5. Click the magnifying glass to find the cache path.
6. Click the magnifying glass to find the cache size.
7. Click Get List to list the files in the SCCM Client cache.
8. Right click each cache file and click Delete Pkg. from cache.

Lub tak - link:

https://social.technet.microsoft.com/Forums/en-US/c84db477-3582-4cb5-840e-2838e9b6fb5f/sccm-2012-r2-clear-client-cache-cwindowsccmcache-with-command-line?forum=configmanagergeneral