Staged Updates-- where are they located on the ESXi host v5.5

Hi--

I have a particularly troublesome update that my VM host says is unneeded when I try to load it (using ESXCLI), but that is marked as necessary after scans, and gets staged on the VMhost.

I know that I can eliminate the issue by removing the update from the baseline, but I'd like to investigate further.

I'd like to look at what is getting staged-- and would also just like to know where things go when they get staged.

Thanks in advance.