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2020/4/18

Git pull refusing to merge unrelated histories

今天在git pull時,發生fatal: refusing to merge unrelated histories,解決方式如下。

狀況是我在Github建立了一個新的repository及預設的README.md。然後在本地又init一個git專案並commit了一些東西,然後才upstream本地到遠端的同名分支(master)。

$ git branch --set-upstream-to=origin/master
Branch 'master' set up to track remote branch 'master' from 'origin'

$ git status
On branch master
Your branch and 'origin/master' have diverged,
and have 1 and 1 different commits each, respectively.
  (use "git pull" to merge the remote branch into yours)

nothing to commit, working tree clean

然後在git pull時就出現錯誤訊息。

$ git pull
fatal: refusing to merge unrelated histories

原因是本地和遠端的commit歷程不一致,仍被視為是分開的不同專案,因此使用git pull origin master --allow-unrelated-histories指令來合併。

$ git pull origin master --allow-unrelated-histories
From https://github.com/matt/demo
 * branch            master     -> FETCH_HEAD
Merge made by the 'recursive' strategy.
 README.md | 2 ++
 1 file changed, 2 insertions(+)
 create mode 100644 README.md

合併後檢視log。

$ git log --all --graph --decorate --oneline
*   73096b7 (HEAD -> master, origin/master) Merge branch 'master' of https://gith.com/matt/crm
|\
| * 823456e Initial commit
* f2092c0 Start

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