上面有很多好的想法和脚本。我情不自禁地将它们组合成一个bash脚本，并提供帮助和错误检查：

#!/bin/bash

function help {
  printf "$1
Clones a specific directory from the master branch of a git repository.

Syntax:
  $(basename $0) [--delrepo] repoUrl sourceDirectory [targetDirectory]

If targetDirectory is not specified it will be set to sourceDirectory.
Downloads a sourceDirectory from a Git repository into targetdirectory.
If targetDirectory is not specified, a directory named after `basename sourceDirectory`
will be created under the current directory.

If --delrepo is specified then the .git subdirectory in the clone will be removed after cloning.


Example 1:
Clone the tree/master/django/conf/app_template directory from the master branch of
git@github.com:django/django.git into ./app_template:

\$ $(basename $0) git@github.com:django/django.git django/conf/app_template

\$ ls app_template/django/conf/app_template/
__init__.py-tpl  admin.py-tpl  apps.py-tpl  migrations  models.py-tpl  tests.py-tpl  views.py-tpl


Example 2:
Clone the django/conf/app_template directory from the master branch of
https://github.com/django/django/tree/master/django/conf/app_template into ~/test:

\$ $(basename $0) git@github.com:django/django.git django/conf/app_template ~/test

\$ ls test/django/conf/app_template/
__init__.py-tpl  admin.py-tpl  apps.py-tpl  migrations  models.py-tpl  tests.py-tpl  views.py-tpl

"
  exit 1
}

if [ -z "$1" ]; then help "Error: repoUrl was not specified.\n"; fi
if [ -z "$2" ]; then help "Error: sourceDirectory was not specified."; fi

if [ "$1" == --delrepo ]; then
  DEL_REPO=true
  shift
fi

REPO_URL="$1"
SOURCE_DIRECTORY="$2"
if [ "$3" ]; then
  TARGET_DIRECTORY="$3"
else
  TARGET_DIRECTORY="$(basename $2)"
fi

echo "Cloning into $TARGET_DIRECTORY"
mkdir -p "$TARGET_DIRECTORY"
cd "$TARGET_DIRECTORY"
git init
git remote add origin -f "$REPO_URL"
git config core.sparseCheckout true

echo "$SOURCE_DIRECTORY" > .git/info/sparse-checkout
git pull --depth=1 origin master

if [ "$DEL_REPO" ]; then rm -rf .git; fi

（扩展此答案）

克隆特定标记中的子目录

如果要克隆特定标记的特定子目录，可以执行以下步骤。

我在cxf-3.5.4标签中克隆了cxf github repo的发行版/src/main/release/samples/子目录。

注意：如果您尝试仅克隆上述回购，您将看到它非常大。下面的命令仅克隆所需的内容。

git clone --depth 1 --filter=blob:none --sparse https://github.com/apache/cxf
cd cxf/
git sparse-checkout set distribution/src/main/release/samples/
git fetch --depth 1 origin cxf-3.5.4
# This is the hash on which the tag points, however using the tag does not work.
git switch --detach 3ef4fde

克隆特定分支中的子目录

我在2.6.x-fixes分支中克隆了cxf github repo的发行版/src/main/release/samples/子目录。

git clone --depth 1 --filter=blob:none --sparse https://github.com/apache/cxf --branch 2.6.x-fixes
cd cxf/
git sparse-checkout set distribution/src/main/release/samples/

虽然我讨厌在处理git repos时使用svn：/我一直使用这个；

function git-scp() (
  URL="$1" && shift 1
  svn export ${URL/blob\/master/trunk}
)

这允许您无需修改即可从github url中复制。用法

--- /tmp » git-scp https://github.com/dgraph-io/dgraph/blob/master/contrib/config/kubernetes/helm                                                                                                                  1 ↵
A    helm
A    helm/Chart.yaml
A    helm/README.md
A    helm/values.yaml
Exported revision 6367.

--- /tmp » ls | grep helm
Permissions Size User    Date Modified    Name
drwxr-xr-x     - anthony 2020-01-07 15:53 helm/

我写了一个从GitHub下载子目录的脚本。

用法：

python get_git_sub_dir.py path/to/sub/dir <RECURSIVE>

对于其他只想从github下载文件/文件夹的用户，只需使用：

svn export <repo>/trunk/<folder>

e.g.

svn export https://github.com/lodash/lodash.com/trunk/docs

（是的，这里是svn。显然在2016年，您仍然需要svn来下载一些github文件）

提供：从GitHub repo下载单个文件夹或目录

重要信息-请确保更新github URL并将/tree/master/替换为'trunk/'。

作为bash脚本：

git-download(){
    folder=${@/tree\/master/trunk}
    folder=${folder/blob\/master/trunk}
    svn export $folder
}

笔记此方法下载文件夹，但不克隆/签出它。您不能将更改推回到存储库。另一方面，与稀疏签出或浅签出相比，这导致下载量较小。

这将克隆特定文件夹并删除所有与之无关的历史记录。

git clone --single-branch -b {branch} git@github.com:{user}/{repo}.git
git filter-branch --subdirectory-filter {path/to/folder} HEAD
git remote remove origin
git remote add origin git@github.com:{user}/{new-repo}.git
git push -u origin master