3 files changed, 7 insertions, 1 deletions
diff --git a/lib/git/branch.rb b/lib/git/branch.rb
index c2ce810..6c1bc44 100644
--- a/lib/git/branch.rb
+++ b/lib/git/branch.rb
@@ -21,7 +21,7 @@ module Git
     end
     
     def gcommit
-      @gcommit = @base.object(@full) if !@gcommit
+      @gcommit = @base.gcommit(@full) if !@gcommit
       @gcommit
     end
     
diff --git a/lib/git/lib.rb b/lib/git/lib.rb
index 0d44183..c6d3580 100644
--- a/lib/git/lib.rb
+++ b/lib/git/lib.rb
@@ -82,6 +82,9 @@ module Git
     end
     
     def revparse(string)
+      if /\w{40}/.match(string)  # passing in a sha - just no-op it
+        return string
+      end
       command('rev-parse', string)
     end
     
diff --git a/lib/git/object.rb b/lib/git/object.rb
index 058053c..97a1a17 100644
--- a/lib/git/object.rb
+++ b/lib/git/object.rb
@@ -208,6 +208,9 @@ module Git
       end
       
       def set_commit(data)
+        if data['sha']
+          @sha = data['sha']
+        end
         @committer = Git::Author.new(data['committer'])
         @author = Git::Author.new(data['author'])
         @tree = Tree.new(@base, data['tree'])