What version are you running?
Review Board 2.0.12
What's the URL of the page containing the problem?
1) We have a private BitBucket server, I was trying to add git repo. on BitBucket to Review Board.
2) I was able to add git repository on private BitBucket server to Review Board using SSH key. 
With RAW file URL Mask as "https://bitbucket.edg.xyz.com/projects/$PROJECT/repos/$REPO/raw/$FILENAME?at=$REV"
3) Everything look good, but the review diff fails ? 
4) In the rejects I can see the diff as
[root@xyz reviewboard.FtBqiQ]# cat dependencies.py.diff

diff --git a/reviewboard/dependencies.py b/reviewboard/dependencies.py

index e48e2922ec79ed0f451d1d20b6196044f9eb4fe0..537c64e8ebe4878f9471feb0ae28ade39fc5da3d 100644

--- a/reviewboard/dependencies.py

+++ b/reviewboard/dependencies.py

@@ -1,3 +1,4 @@

+#testing

 """Version information for Review Board dependencies.
This contains constants that other parts of Review Board (primarily packaging)
[root@xyz reviewboard.FtBqiQ]# cat tmpmZbvzb-new.rej

--- dependencies.py

+++ dependencies.py

@@ -1,3 +1,4 @@

+#testing

 """Version information for Review Board dependencies.
This contains constants that other parts of Review Board (primarily packaging)



I am not able to understand the issue by seeing the rejects, can you pleae help me with the issue.