Encode username for git
diff --git a/ForgeGit/forgegit/model/git_repo.py b/ForgeGit/forgegit/model/git_repo.py
index 385f440..981a23e 100644
--- a/ForgeGit/forgegit/model/git_repo.py
+++ b/ForgeGit/forgegit/model/git_repo.py
@@ -128,7 +128,7 @@
             tmp_repo.git.checkout(mr.target_branch)
             tmp_repo.git.fetch(mr.downstream_repo.full_fs_path, mr.source_branch)
             author = h.really_unicode(c.user.display_name or c.user.username)
-            tmp_repo.git.config('user.name', author)
+            tmp_repo.git.config('user.name', author.encode('utf8'))
             tmp_repo.git.config('user.email', '')
             msg = u'Merge {} branch {} into {}\n\n{}'.format(
                 mr.downstream_repo.url(),