Get Tag

github4s/src/main/scala/github4s/algebras/GitData.scala

@@ -216,6 +216,22 @@ trait GitData[F[_]] {
       headers: Map[String, String] = Map()
   ): F[GHResponse[TreeResult]]
 
+  /**
+   * Get a Tag by sha
+   *
+   * @param owner of the repo
+   * @param repo name of the repo
+   * @param sha the sha of the tree
+   * @param headers optional user headers to include in the request
+   * @return a GHResponse with the Tree
+   */
+  def getTag(
+      owner: String,
+      repo: String,
+      sha: String,
+      headers: Map[String, String] = Map()
+  ): F[GHResponse[Tag]]
+
   /**
    * Create a Tag
    *

github4s/src/main/scala/github4s/interpreters/GitDataInterpreter.scala

@@ -135,6 +135,18 @@ class GitDataInterpreter[F[_]](implicit client: HttpClient[F]) extends GitData[F
       NewTreeRequest(treeDataList, baseTree)
     )
 
+  override def getTag(
+      owner: String,
+      repo: String,
+      sha: String,
+      headers: Map[String, String]
+  ): F[GHResponse[Tag]] =
+    client.get[Tag](
+      accessToken,
+      s"repos/$owner/$repo/git/tags/$sha",
+      headers
+    )
+
   override def createTag(
       owner: String,
       repo: String,

github4s/src/test/scala/github4s/unit/GitDataSpec.scala

@@ -191,6 +191,31 @@ class GitDataSpec extends BaseSpec {
 
   }
 
+  "GitData.getTag" should "call to httpClient.get with the right parameters" in {
+
+    val response: IO[GHResponse[Tag]] =
+      IO(
+        GHResponse(
+          tag.asRight,
+          okStatusCode,
+          Map.empty
+        )
+      )
+
+    implicit val httpClientMock = httpClientMockGet[Tag](
+      url = s"repos/$validRepoOwner/$validRepoName/git/tags/$validCommitSha",
+      response = response
+    )
+    val gitData = new GitDataInterpreter[IO]
+
+    gitData.getTag(
+      validRepoOwner,
+      validRepoName,
+      validCommitSha,
+      headerUserAgent
+    )
+  }
+
   "GitData.createTag" should "call to httpClient.post with the right parameters" in {
 
     val request =