Using web interface to create branch from existing branch with identical release name leads to error 500

[99rgosse]

Description

Hello !
When using the web interface to create branch, if you create from a branch that has the same name as a tag, this leads to a 500 error (tested on try.gitea.io)

Steps using the web interface:

1. Create a branch named "testing"
2. Create a tag (with or without release) with the "testing" branch, name it "testing"
3. Now go back to branches and try to create a branch from "testing"
4. Error 500 : log says : CreateNewBranch: Push: ErrMoreThanOne Error: exit status 1: error: src refspec testing matches more than one

Gitea Version

1.16.5 / 1.17 dev

Can you reproduce the bug on the Gitea demo site?

Yes

Log Gist

https://try.gitea.io/99rgosse/gitlab_to_gitea/src/branch/master/log

Screenshots

Git Version

2.27

Operating System

Linux

How are you running Gitea?

From Docker 1.16.5 and also on try.gitea.io

Database

PostgreSQL