Fixes: #491: correct add_changelog_entry(): Incorrect evr expansion (#492)

Fixes: #491: correct add_changelog_entry(): Incorrect evr expansion 

Address #491: add_changelog_entry(): Incorrect evr expansion

Reviewed-by: gemini-code-assist[bot]
Reviewed-by: Nikola Forró
Reviewed-by: Maxwell G
Reviewed-by: Jesse Portnoy <[email protected]>

Author: softwarefactory-project-zuul[bot]

specfile/specfile.py

@@ -611,7 +611,15 @@ def add_changelog_entry(
                 if self.contains_autochangelog(section):
                     continue
                 if evr is None:
-                    evr = "%{?epoch:%{epoch}:}%{version}-%{release}"
+                    with self.tags() as tags:
+                        try:
+                            evr = f"{tags.epoch.expanded_value}:"
+                        except AttributeError:
+                            evr = ""
+                        evr += f"{tags.version.expanded_value}-"
+                        evr += self.expand(
+                            tags.release.value, extra_macros=[("dist", "")]
+                        )
                 with self.changelog(section) as changelog:
                     if changelog is None:
                         return