- no need to fetch tags if from and to are already precisely defined

pr-collector/src/tags.ts

@@ -140,6 +140,9 @@ export class Tags {
     maxTagsToFetch: number,
     tagResolver: TagResolver
   ): Promise<TagResult> {
+    let tags: TagInfo[] = []
+
+    if (!toTag || !fromTag) {
       // filter out tags not matching the specified filter
       const filteredTags = filterTags(
         // retrieve the tags from the API
@@ -171,7 +174,7 @@ export class Tags {
       }
 
       // sort tags, apply additional information (e.g. if tag is a pre release)
-    let tags = prepareAndSortTags(transformedTags, tagResolver)
+      tags = prepareAndSortTags(transformedTags, tagResolver)
 
       if (transformed) {
         // restore the original name, after sorting
@@ -183,6 +186,7 @@ export class Tags {
           }
         })
       }
+    }
 
     let resultToTag: TagInfo | null
     let resultFromTag: TagInfo | null