How to update macOS to latest release of current version?

Question

I am on Catalina 10.15.3 and do not want to move to Big Sur just yet. Software Update does have the option to update to Big Sur but I am unable to determine how to do just a minor point update. How do I install the latest update of Catalina?

Update From a comment by @jefe2000 I am trying the command line version and it seems promising.

$/usr/sbin/softwareupdate -l
Software Update Tool

Finding available software
Software Update found the following new or updated software:
* Label: macOS Catalina 10.15.7 Update- 
    Title: macOS Catalina 10.15.7 Update, Version:  , Size: 5099042K, Recommended: YES, Action: restart, 

But what is the actual label? I was unable to get this to work and have created a separate question for it. Unable to install an update via the softwareupdate command line tool

Answer 1

Download and install the Catalina 10.15.7 Combo Update from Apple.

Answer 2

The command line version of the macOS software update — /usr/sbin/softwareupdate — has the capability to ignore specified updates. The --ignore command line option performs the functionality.

From the sofwareupdate man page:

--ignore identifier ...
    Manages the per-machine list of ignored updates.
    The identifier is the first part of the item name (before
    the dash and version number) that is shown by --list.

Using this, you could tell the software updater to ignore the Big Sur updates and install any other available updates.