3 files changed, 3 insertions, 7 deletions
diff --git a/pygithub3/requests/git_data/commits.py b/pygithub3/requests/git_data/commits.py
index caf1e7d..a26e07d 100644
--- a/pygithub3/requests/git_data/commits.py
+++ b/pygithub3/requests/git_data/commits.py
@@ -1,7 +1,7 @@
 # -*- encoding: utf-8 -*-
 
 from pygithub3.requests.base import Request
-from pygithub3.resources.git_data import Commit
+from pygithub3.resources.repos import Commit
 
 
 class Get(Request):
diff --git a/pygithub3/requests/git_data/references.py b/pygithub3/requests/git_data/references.py
index 99cf41a..2aac6a4 100644
--- a/pygithub3/requests/git_data/references.py
+++ b/pygithub3/requests/git_data/references.py
@@ -8,7 +8,7 @@ class Get(Request):
 
 
 class List(Request):
-    uri = 'repos/{user}/{repo}/git/refs'
+    uri = 'repos/{user}/{repo}/git/refs/{namespace}'
     resource = Reference
 
 
diff --git a/pygithub3/requests/git_data/trees.py b/pygithub3/requests/git_data/trees.py
index bd1593f..11d6409 100644
--- a/pygithub3/requests/git_data/trees.py
+++ b/pygithub3/requests/git_data/trees.py
@@ -6,15 +6,11 @@ class Get(Request):
     uri = 'repos/{user}/{repo}/git/trees/{sha}'
     resource = Tree
 
-    def clean_uri(self):
-        if self.recursive:
-            return self.uri + '?recursive=1'
-
 
 class Create(Request):
     uri = 'repos/{user}/{repo}/git/trees'
     resource = Tree
     body_schema = {
-        'schema': ('tree',),
+        'schema': ('tree', 'base_tree'),
         'required': ('tree',),
     }