Wiki start page will overwritten by other top pages

[hkato]

This kind of wiki structure pattern

$ migrate-rg pages --redmine-key my_redmine_key \
  --gitlab-wiki ~/tmp/test.wiki \
  http://localhost/projects/test

migrate-rg creates these pages

• Wik -> home.md
• WikiTopPage2 -> home.md (overwrite)
• WikiTopPage3 -> home.md (overwrite)

$ cd ~/tmp/test.wiki
$ ls -l *.md
.rw-r--r-- 84 hideyuki staff 2020-08-15 17:52 ChiledPage1.md
.rw-r--r-- 39 hideyuki staff 2020-08-15 17:52 ChiledPage2.md
.rw-r--r-- 33 hideyuki staff 2020-08-15 17:52 GrandchildPage1.md
.rw-r--r-- 27 hideyuki staff 2020-08-15 17:52 home.md

WikiTopPage2.md, WikiTopPage3.md are not created and home.md is overwritten.

I'm tested on

• Redmine 4.1.1 (docker official image)
• 6992a60

// Maybe, I will fix this issue... OK?