When I look through the C:\windows\windowsupdate.log I see events like this :
Added update {19a3a735-8458-4b6c-baa8-eef88e4058cf}.201 to search result
How can I map a guid given in this way to an update? What is the significance of the .201? (or 200 or whatever, it varies)
If your update is finally selected for installation, you will find additional entries in the windowsupdate.log
Otherwise, for a local WSUS server maybe an approach such as How to get a list of every WSUS update using PowerShell might be useful. For MS updates, the Microsoft Update Catalog shuld be queryable by id (I cannot test that from my OS).