Forking an empty repo via the API leads to a repo that throws a 500 error

[shay-k]

• Gitea version (or commit ref): 1.7.6
• Git version: 2.18.1
• Operating system: macOS 10.14.3
• 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/shay2/foo
  • No
  • Not relevant
• Log gist:

[Macaron] 2019-04-15 13:49:52: Started GET /gitea/foo for 172.17.0.1
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `lower_name`, `name`, `full_name`, `email`, `keep_email_private`, `passwd`, `must_change_password`, `login_type`, `login_source`, `login_name`, `type`, `location`, `website`, `rands`, `salt`, `language`, `created_unix`, `updated_unix`, `last_login_unix`, `last_repo_visibility`, `max_repo_creation`, `is_active`, `is_admin`, `allow_git_hook`, `allow_import_local`, `allow_create_organization`, `prohibit_login`, `avatar`, `avatar_email`, `use_custom_avatar`, `num_followers`, `num_following`, `num_stars`, `num_repos`, `description`, `num_teams`, `num_members`, `diff_view_style` FROM `user` WHERE `id`=? LIMIT 1 []interface {}{1}
2019/04/15 13:49:52 [I] [SQL] SELECT count(*) FROM `notification` WHERE (user_id = ?) AND (status = ?) []interface {}{1, 0x1}
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `owner_id`, `lower_name`, `name`, `description`, `website`, `default_branch`, `num_watches`, `num_stars`, `num_forks`, `num_issues`, `num_closed_issues`, `num_pulls`, `num_closed_pulls`, `num_milestones`, `num_closed_milestones`, `is_private`, `is_bare`, `is_mirror`, `is_fork`, `fork_id`, `size`, `is_fsck_enabled`, `topics`, `created_unix`, `updated_unix` FROM `repository` WHERE `owner_id`=? AND `lower_name`=? LIMIT 1 []interface {}{1, "foo"}
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `repo_id`, `type`, `config`, `created_unix` FROM `repo_unit` WHERE (repo_id = ?) []interface {}{3}
[git-module] /data/git/repositories/gitea/foo.git: git -c credential.helper= -c credential.helper= -c filter.lfs.required= -c filter.lfs.smudge= -c filter.lfs.clean= tag -l --sort=-v:refname
2019/04/15 13:49:52 [I] [SQL] SELECT count(*) FROM `release` WHERE repo_id=? AND is_draft=? []interface {}{3, false}
2019/04/15 13:49:52 [I] [SQL] SELECT * FROM `user` INNER JOIN `team_user` ON `team_user`.org_id=`user`.id INNER JOIN `team` ON `team`.id=`team_user`.team_id WHERE (`team_user`.uid=?) AND (`team`.authorize=?) ORDER BY `user`.`name` ASC []interface {}{1, 4}
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `user_id`, `repo_id` FROM `watch` WHERE `user_id`=? AND `repo_id`=? LIMIT 1 []interface {}{1, 3}
[git-module] /data/git/repositories/gitea/foo.git: git -c credential.helper= -c credential.helper= -c filter.lfs.required= -c filter.lfs.smudge= -c filter.lfs.clean= show-ref --verify refs/heads/master
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `uid`, `repo_id` FROM `star` WHERE `uid`=? AND `repo_id`=? LIMIT 1 []interface {}{1, 3}
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `owner_id`, `lower_name`, `name`, `description`, `website`, `default_branch`, `num_watches`, `num_stars`, `num_forks`, `num_issues`, `num_closed_issues`, `num_pulls`, `num_closed_pulls`, `num_milestones`, `num_closed_milestones`, `is_private`, `is_bare`, `is_mirror`, `is_fork`, `fork_id`, `size`, `is_fsck_enabled`, `topics`, `created_unix`, `updated_unix` FROM `repository` WHERE `id`=? LIMIT 1 []interface {}{2}
2019/04/15 13:49:52 [I] [SQL] SELECT `id`, `lower_name`, `name`, `full_name`, `email`, `keep_email_private`, `passwd`, `must_change_password`, `login_type`, `login_source`, `login_name`, `type`, `location`, `website`, `rands`, `salt`, `language`, `created_unix`, `updated_unix`, `last_login_unix`, `last_repo_visibility`, `max_repo_creation`, `is_active`, `is_admin`, `allow_git_hook`, `allow_import_local`, `allow_create_organization`, `prohibit_login`, `avatar`, `avatar_email`, `use_custom_avatar`, `num_followers`, `num_following`, `num_stars`, `num_repos`, `description`, `num_teams`, `num_members`, `diff_view_style` FROM `user` WHERE `id`=? LIMIT 1 []interface {}{2}
[git-module] /data/git/repositories/gitea/foo.git: git -c credential.helper= -c credential.helper= -c filter.lfs.required= -c filter.lfs.smudge= -c filter.lfs.clean= show-ref --verify refs/heads/master
[Macaron] 2019-04-15 13:49:52: Completed GET /gitea/foo 404 Not Found in 13.241989ms

Description

You can fork an empty repo using the API, when you do so the resulting fork is bugged and shows a 500 error page (404 from the HTTP status code).

Note that we want this to work and not just be blocked in the API. Our system does that in certain cases.

Screenshots