--- cmd/grv/vendor/gopkg.in/libgit2/git2go.v27/diff.go   2018-07-14 03:13:29.682424699 -0700
+++ cmd/grv/vendor/gopkg.in/libgit2/git2go.v27/diff.go   2018-07-14 03:13:24.210458876 -0700
@@ -405,7 +405,7 @@
 	return newPatchFromC(patchPtr), nil
 }
 
-type DiffOptionsFlag int
+type DiffOptionsFlag uint
 
 const (
 	DiffNormal                 DiffOptionsFlag = C.GIT_DIFF_NORMAL