在git中具有子模块的浅表克隆，如何使用指向的提交而不是最新的提交? [英] Shallow clone with submodules in git, how to use pointed commits and not latest ones?

问题描述

我知道使用--depth选项和git submodule update可能有浅层子模块.

I know it's possible to have shallow submodules using the --depth option with git submodule update.

但是，如果我跑步

git submodule update --init --recursive --depth 1

在具有几个子模块的项目中，我得到一个fatal: reference is not a tree.所以我再次尝试了

on my project with several submodules, I get a fatal: reference is not a tree. So I've tried again with

git submodule update --init --recursive --depth 100

它正常工作，但是我想将深度保持在1.

which worked correctly, however I'd like to keep depth at 1.

在我看来，--depth 1提取子模块中的最新提交，而不是主存储库指向的提交，这就是为什么将其设置为100可以解决问题的原因，因为它提取了更长的提交列表，包括尖的.

It seems to me that --depth 1 pulls the latest commit in the submodule, not the commit pointed by the main repository, and that's why setting it to 100 solved the problem, since it pulled a longer list of commits, including the pointed ones.

不幸的是，如果是这种情况，那么我通常不能确定最近的100次提交中是否包含我需要的提交.

Unfortunately, if that's the case then I cannot generally be sure the latest 100 commits include the one I need.

我如何告诉git使用带尖头的提交，而不是浅克隆中带有子模块的最新提交?

How do I tell git to use the pointed commits and not the latest ones in the shallow clone with submodules?

我在Windows上使用git 1.9.4.

I'm using git 1.9.4 on Windows.

推荐答案

不幸的是，似乎没有办法仅使用特定的提交ID来执行git fetch.如果有，我真的很想知道.但是，我用两种不同的方式处理您的问题:一种，如果可能的话，是在远程存储库上创建一个标记或分支，该标记或分支指向我想要的提交，例如我们称其为"ref".这样，我可以获取远程引用，并且--depth将适用于它，而不是最新的技巧.我代替了git submodule update --init:

Unfortunately there doesn't seem to be a way to do a git fetch with only a specific commit ID. If there is I would really want to know. However I have dealt with your problem in two different ways: one, if it's possible, is to create a tag or branch on the remote repository which points to the commit I want, say we call it "ref". This way I can fetch the remote ref and the --depth will apply to it, not the latest tip. Instead of git submodule update --init I do:

git submodule init
git clone --depth 1 -b ref --separate-git-dir .git/modules/sub/ repository sub

其中"sub"是子模块的名称和路径(为简单起见，它们是相同的)

where "sub" is the name and path of the submodule (for simplicity let's say they are the same)

如果无法在远程存储库中创建标签或分支，则另一种方法是在循环中搜索所需的提交:

The other way, if you can't create tags or branches in the remote repository, is to search for the commit you want in a loop:

git submodule init
id=$(git submodule status|sed -ne 's/.\([a-z0-9]*\) sub.*/\1/p'
git clone --depth 1 --separate-git-dir -n .git/modules/sub/ repository sub    
cd sub
while ! git rev-list $id ; do
    git fetch --depth $((i+=1))
done
git checkout $id

您可以一次增加一个以上的提交，以使其更快，但最终可能会比您想要的提交更早一些.

You could increment with more than just one commit at a time to make it go faster, but you might end up with some earlier commits than the one you want.

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