Provide hibernate configuration file with a mapping/resource entry:

...
<hibernate-configuration>
	<session-factory name="sf1">
		<mapping resource="name.hbm.xml"/>
		...
	</session-factory>
...
</hibernate-configuration>

The file name.hbm.xml exists and referred correctly.

Provide a package with FQN "name".
Refactor / Rename or Refactor / Move "name" to "nameRenamed" or "cont.name".
Result: reference to file is changed to "nameRenamed.hbm.xml" and "cont.name.hbm.xml" correspondingly.
That's error, file name.hbm.xml was not touched with refactoring. Do not process mapping/resource entries this way.