diff --git a/docs/en/guide/manual-build.md b/docs/en/guide/manual-build.md
index a8d252dc..487d3329 100644
--- a/docs/en/guide/manual-build.md
+++ b/docs/en/guide/manual-build.md
@@ -204,6 +204,19 @@ bin/spc download --all -U "php-src:https://downloads.php.net/~eric/php-8.3.0beta
 bin/spc download --all -U "curl:https://curl.se/download/curl-7.88.1.tar.gz"
 ```
 
+If the source you download is not a link, but a git repository, you can use `-G` or `--custom-git` to rewrite the download link,
+so that the downloader can force the use of the specified git repository to download packages from this source.
+The usage method is `{source-name}:{branch}:{url}`, which can rewrite the download link of multiple libraries at the same time. 
+It is also available when downloading with the `--for-extensions` option.
+
+```bash
+# Specifying to download the source code of the PHP extension from the specified branch of the git repository
+bin/spc download --for-extensions=redis -G "php-src:master:https://github.com/php/php-src.git"
+
+# Download the latest code from the master branch of the swoole-src repository instead of PECL release version
+bin/spc download --for-extensions=swoole -G "swoole:master:https://github.com/swoole/swoole-src.git"
+```
+
 ## Command - doctor
 
 If you can run `bin/spc` normally but cannot compile static PHP or dependent libraries normally, 
diff --git a/docs/zh/guide/manual-build.md b/docs/zh/guide/manual-build.md
index dd3d38ac..98f939a7 100644
--- a/docs/zh/guide/manual-build.md
+++ b/docs/zh/guide/manual-build.md
@@ -176,6 +176,17 @@ bin/spc download --all -U "php-src:https://downloads.php.net/~eric/php-8.3.0beta
 bin/spc download --all -U "curl:https://curl.se/download/curl-7.88.1.tar.gz"
 ```
 
+如果你下载的资源不是链接，而是一个 Git 仓库，你可以使用 `-G` 或 `--custom-git` 重写下载链接，让下载器强制使用你指定的 Git 仓库下载此 source 的包。
+使用方法为 `{source-name}:{branch}:{url}` 即可，可同时重写多个库的下载地址。在使用 `--for-extensions` 选项下载时同样可用。
+
+```bash
+# 例如：下载 master 分支的 php-src
+bin/spc download --for-extensions=redis,phar -G "php-src:master:https://github.com/php/php-src.git"
+
+# 从 swoole-src 仓库下载 master 分支的最新代码，而不是发行版
+bin/spc download --for-extensions=swoole -G "swoole:master:https://github.com/swoole/swoole-src.git"
+```
+
 ## 命令 doctor - 环境检查
 
 如果你可以正常运行 `bin/spc` 但无法正常编译静态的 PHP 或依赖库，可以先运行 `bin/spc doctor` 检查系统自身是否缺少依赖。
diff --git a/src/SPC/command/DownloadCommand.php b/src/SPC/command/DownloadCommand.php
index 9f217dbf..7419c60e 100644
--- a/src/SPC/command/DownloadCommand.php
+++ b/src/SPC/command/DownloadCommand.php
@@ -34,6 +34,7 @@ public function configure(): void
         $this->addOption('clean', null, null, 'Clean old download cache and source before fetch');
         $this->addOption('all', 'A', null, 'Fetch all sources that static-php-cli needed');
         $this->addOption('custom-url', 'U', InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Specify custom source download url, e.g "php-src:https://downloads.php.net/~eric/php-8.3.0beta1.tar.gz"');
+        $this->addOption('custom-git', 'G', InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Specify custom source git url, e.g "php-src:master:https://github.com/php/php-src.git"');
         $this->addOption('from-zip', 'Z', InputOption::VALUE_REQUIRED, 'Fetch from zip archive');
         $this->addOption('for-extensions', 'e', InputOption::VALUE_REQUIRED, 'Fetch by extensions, e.g "openssl,mbstring"');
         $this->addOption('for-libs', 'l', InputOption::VALUE_REQUIRED, 'Fetch by libraries, e.g "libcares,openssl,onig"');
@@ -179,6 +180,12 @@ public function handle(): int
                 [$source_name, $url] = explode(':', $value, 2);
                 $custom_urls[$source_name] = $url;
             }
+            // Process -G options
+            $custom_gits = [];
+            foreach ($this->input->getOption('custom-git') as $value) {
+                [$source_name, $branch, $url] = explode(':', $value, 3);
+                $custom_gits[$source_name] = [$branch, $url];
+            }
 
             // If passing --prefer-pre-built option, we need to load pre-built library list from pre-built.json targeted releases
             if ($this->getOption('prefer-pre-built')) {
@@ -211,6 +218,18 @@ public function handle(): int
                     }
                     logger()->info("Fetching source {$source} from custom url [{$ni}/{$cnt}]");
                     Downloader::downloadSource($source, $new_config, true);
+                } elseif (isset($custom_gits[$source])) {
+                    $config = Config::getSource($source);
+                    $new_config = [
+                        'type' => 'git',
+                        'rev' => $custom_gits[$source][0],
+                        'url' => $custom_gits[$source][1],
+                    ];
+                    if (isset($config['path'])) {
+                        $new_config['path'] = $config['path'];
+                    }
+                    logger()->info("Fetching source {$source} from custom git [{$ni}/{$cnt}]");
+                    Downloader::downloadSource($source, $new_config, true);
                 } else {
                     $config = Config::getSource($source);
                     // Prefer pre-built, we need to search pre-built library