问题[wait](unix)

在这个脚本中，它会拉取所有 git 存储库：

#!/bin/bash

find / -type d -name .git 2>/dev/null | 
while read gitFolder; do
    if [[ $gitFolder == *"/Temp/"* ]]; then
        continue;
    fi
    if [[ $gitFolder == *"/Trash/"* ]]; then
        continue;
    fi
    if [[ $gitFolder == *"/opt/"* ]]; then
        continue;
    fi
    parent=$(dirname $gitFolder);
    echo "";
    echo $parent;
    (git -C $parent pull && echo "Got $parent") &
done 
wait
echo "Got all"

不wait等待所有git pull子shell。

为什么会这样，我该如何解决？

Bash 5.0 包括一个新-f选项wait：^[1]

j. The `wait' builtin now has a `-f' option, which signfies to wait until the
   specified job or process terminates, instead of waiting until it changes
   state.

wait -f $pid与 default 相比做什么wait $pid？在什么条件下-f需要该选项？