Error with Japanese branch name

[chanhlt]

• Gitea version (or commit ref):
• Git version: 1.5.0
• Operating system: Debian 9
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL): https://try.gitea.io/chanhlt/test-repo
  • No
  • Not relevant
• Log gist:

Description

I created a branch with name: 期日情報
I make changes and push to remote server.
Then, I visit Gitea Dashboard page.
I see my last activity there.

And when I click on the branch name, I get error.

Screenshots