fix: use correct SHA for changelogs

semrel.go

@@ -138,11 +138,18 @@ func (repo *Repository) GetLatestRelease(vrange string) (*Release, error) {
 		opts.Page = resp.NextPage
 	}
 	sort.Sort(allReleases)
+
+	var lastRelease *Release
+	for _, r := range allReleases {
+		if r.Version.Prerelease() == "" {
+			lastRelease = r
+			break
+		}
+	}
+
 	if vrange == "" {
-		for _, r := range allReleases {
-			if r.Version.Prerelease() == "" {
-				return r, nil
-			}
+		if lastRelease != nil {
+			return lastRelease, nil
 		}
 		return &Release{"", &semver.Version{}}, nil
 	}
@@ -164,14 +171,14 @@ func (repo *Repository) GetLatestRelease(vrange string) (*Release, error) {
 
 	splitPre := strings.SplitN(vrange, "-", 2)
 	if len(splitPre) == 1 {
-		return &Release{allReleases[0].SHA, nver}, nil
+		return &Release{lastRelease.SHA, nver}, nil
 	}
 
 	npver, err := nver.SetPrerelease(splitPre[1])
 	if err != nil {
 		return nil, err
 	}
-	return &Release{allReleases[0].SHA, &npver}, nil
+	return &Release{lastRelease.SHA, &npver}, nil
 }
 
 func (repo *Repository) CreateRelease(commits []*Commit, latestRelease *Release, newVersion *semver.Version, branch string) error {