fix(abg): Only consider refs with exactly three parts (#2306)

Co-authored-by: Piotr Krzemiński <3110813+krzema12@users.noreply.github.com>

Author: Vampire

shared-internal/src/main/kotlin/io/github/typesafegithub/workflows/shared/internal/GithubApi.kt

@@ -25,6 +25,8 @@ import java.time.ZonedDateTime
 
 private val logger = logger { }
 
+private const val MAX_REF_PARTS = 3
+
 suspend fun fetchAvailableVersions(
     owner: String,
     name: String,
@@ -38,6 +40,7 @@ suspend fun fetchAvailableVersions(
                 apiTagsUrl(githubEndpoint = githubEndpoint, owner = owner, name = name),
                 apiBranchesUrl(githubEndpoint = githubEndpoint, owner = owner, name = name),
             ).flatMap { url -> fetchGithubRefs(url, githubAuthToken, httpClient).bind() }
+                .filter { it.ref.split('/', limit = MAX_REF_PARTS + 1).size == MAX_REF_PARTS }
                 .versions(githubAuthToken, meterRegistry = meterRegistry)
         }
     }

shared-internal/src/test/kotlin/io/github/typesafegithub/workflows/shared/internal/model/GithubApiTest.kt

@@ -208,16 +208,12 @@ class GithubApiTest :
                     )
 
                 // Then
-                // This assertion shows current undesired behavior,
-                // TODO fix in https://github.com/typesafegithub/github-workflows-kt/pull/2306
                 versionsOrError shouldBe
                     listOf(
                         Version("v1.0.0"),
                         Version("v1.0.1"),
-                        Version("tag"),
                         Version("v1"),
                         Version("v2"),
-                        Version("branch"),
                     ).right()
             }