Any way to remove an installed package from the RPM database?

[Jon Danniken]

Hello list,

I have a package which I modified from the src.rpm and installed via RPM.

Unfortunately, when I attempt to update my Fedora system (using dnf), it
offers to update my modified version of the application which brings in
several packages which conflict on my system.

Is there any way to remove my modified application from the RPM database
without uninstalling it?  Conversely, is there any way to install an RPM
package without having it being added to the database?

Thanks for any help,

Jon