Failed to synchronize tags to releases for repository

• Gitea version (or commit ref): 09ca391
• Git version: 2.22.0
• Operating system: macOS
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (https://try.gitea.io/yasuokav/cecil)
  • No
  • Not relevant
• Log gist:

...odels/repo_mirror.go:301:runSync() [E] Failed to synchronize tags to releases for repository: pushUpdateAddTag: GetTag: object does not exist [id: 0.11, rel_path: ]

Description

This repository can reproduce this problem: https://github.com/jbevain/cecil.git

This error occurs when migrating or synchronizing the repository.

gitea/modules/git/repo_tag.go

Lines 156 to 162 in ca6fb00

	stdout, err := NewCommand("show-ref", "--", name).RunInDir(repo.Path)
	if err != nil {
	return "", err
	}
	fields := strings.Fields(stdout)
	if len(fields) != 2 {
	return "", ErrNotExist{ID: name}

show-ref in this repository returns two lines of results instead of one

$git show-ref 0.11
12da1bf7e0e10278e05eeb23adfc72760bbb6668 refs/heads/release/0.11
ec814ea6357bff732a6217e9c3b263ea0fb450c0 refs/tags/0.11

Screenshots

@richmahn

Can you check this issue? I guess this is caused by #7138

[richmahn]

@yasuokav Ok, will check it out.

[j123b567]

This is not enough. If you have tag name a/v1 and v1 this still fails.

[sapk]

Maybe we should use go-git now for this func : https://godoc.org/gopkg.in/src-d/go-git.v4#Repository.Tag