git：拉取特定分支，只保留最新的树（没有任何历史）
git: pull specific branch, keep only the latest tree (without any history)
如何从远程存储库中提取特定分支，只检查最新的树而不保留任何历史记录？
这个问题与检查 Gentoo 的 Portage 树特别相关：我想更新我的 Portage 树，不保留任何历史记录，最小化 /usr/portage/.git 的大小。
像这样：
$ git clone --branch dotnet-mono-eclass-lat --depth 1 https://anongit.gentoo.org/git/repo/gentoo.git
来自man git-clone：
--branch <name>, -b <name>
Instead of pointing the newly created HEAD to the branch pointed to by the cloned repository’s HEAD,
point to <name> branch instead. In a non-bare repository, this is the branch that will be checked out.
--depth <depth>
Create a shallow clone with a history truncated to the specified number of revisions. A shallow
repository has a number of limitations (you cannot clone or fetch from it, nor push from nor into
it), but is adequate if you are only interested in the recent history of a large project with a long
history, and would want to send in fixes as patches.
下载没有历史记录的存储库：
git 克隆 --depth 1
要更新已克隆的浅存储库：
git pull --depth 1
or
git pull --update-shallow
如何从远程存储库中提取特定分支，只检查最新的树而不保留任何历史记录？
这个问题与检查 Gentoo 的 Portage 树特别相关：我想更新我的 Portage 树，不保留任何历史记录，最小化 /usr/portage/.git 的大小。
像这样：
$ git clone --branch dotnet-mono-eclass-lat --depth 1 https://anongit.gentoo.org/git/repo/gentoo.git
来自man git-clone：
--branch <name>, -b <name>
Instead of pointing the newly created HEAD to the branch pointed to by the cloned repository’s HEAD, point to <name> branch instead. In a non-bare repository, this is the branch that will be checked out.
--depth <depth>
Create a shallow clone with a history truncated to the specified number of revisions. A shallow repository has a number of limitations (you cannot clone or fetch from it, nor push from nor into it), but is adequate if you are only interested in the recent history of a large project with a long history, and would want to send in fixes as patches.
下载没有历史记录的存储库： git 克隆 --depth 1
要更新已克隆的浅存储库：
git pull --depth 1 or git pull --update-shallow