Reduce local git repo storage

由于 MacBook Pro 500G 的存储已经用完，急需清理存储空间，否则无法继续工作。经过分析，工作的仓库占据了绝大部分的空间，想到其实有很多历史记录我是不需要的，在需要时，可以重新 fetch 或者去 git 的网页查看。

Delete files

首先删除本地的 tags, 在需要的时候从 remote 重新拉取即可。

git tag | xargs git tag -d

删除本地多余的分支，对剩下的分支，执行：

# Option1: set depth
git fetch --depth=50 origin [branch]

# Option1: set date
git fetch --shallow-since=2021-01-01 origin [branch]

Optional 1 删除 remote

git remote rm origin

Optinal 2 如果不想删除 remote, 也可以手动删掉 remote 分支

git branch --remotes | grep origin/[name] | xargs git branch --delete --remotes

执行真正的清理工作

git reflog expire --expire-unreachable=all --all
git gc --prune=all

如果前面删除了 remote 需要重新加上

git remote add origin [url]

删除多余的 lfs file

git lfs prune

lfs reference

Other Tips

fetch w/o tags

fetch -p -n origin [branch]

-p --prune Before fetching, remove any remote-tracking references that no longer exist on the remote. Tags are not subject to pruning if they are fetched only because of the default tag auto-following or due to a --tags option. However, if tags are fetched due to an explicit refspec (either on the command line or in the remote configuration, for example if the remote was cloned with the --mirror option), then they are also subject to pruning. Supplying --prune-tags is a shorthand for providing the tag refspec.
See the PRUNING section below for more details.

-n --no-tags By default, tags that point at objects that are downloaded from the remote repository are fetched and stored locally. This option disables this automatic tag following. The default behavior for a remote may be specified with the remote..tagOpt setting. See git-config[1].