Add branch support to Item class and enhance get_content method

sk/devops.py

@@ -243,8 +243,16 @@ class Item():
     def __init__(self, repository: Repository, **kwargs):
         self._repository = repository
         self.from_args(**kwargs) # type: ignore[attr-defined]
+        if "branch" in kwargs:
+            self._branch = kwargs.get("branch")
         log_entity_creation(log, Item, self.path)
 
+    @property
+    def branch(self):
+        if hasattr(self, "_branch"):
+            return getattr(self, "_branch")
+        return None
+
     def get_auto_properties(self):
         r = self._repository._project.organization.get_path(
             path=f"{self._repository._project.id}/_apis/git/repositories/{self._repository.id}/items",
@@ -256,17 +264,28 @@ class Item():
         )
         self.from_json(r.json()) # type: ignore[attr-defined]
 
-    def get_content(self) -> bytes:
-        """Get the content of the item if it is a file."""
+    def get_content(self, branch: str | None = None, commit: str | None = None, tag: str | None = None) -> bytes:
+        """Get the content of the item with optional branch, commit, or tag."""
         if self.git_object_type != "blob": # type: ignore[attr-defined]
             raise ValueError("Content can only be fetched for blob items.")
 
+        params = { "path": self.path, "recursionLevel": "none" }
+        if self.branch and branch is None:
+            branch = self.branch
+
+        if branch:
+            params["version"] = branch
+            params["versionType"] = "branch"
+        elif tag:
+            params["version"] = tag
+            params["versionType"] = "tag"
+        elif commit:
+            params["version"] = commit
+            params["versionType"] = "commit"
+
         r = self._repository._project.organization.get_path(
             path=f"{self._repository._project.id}/_apis/git/repositories/{self._repository.id}/items",
-            params={
-                "path": self.path,
-                "recursionLevel": "none"
-            }
+            params=params
         )
         return r.content