Q:

Feeding Multiline STDIN Input to Command

I have a script that outputs git repository SSH URLs, like this:
git@example.com:namespace/project.git
git@example.com:another_namespace/some_other_project.git

I want to run the command git clone (or other commands) for each line. 
I tried piping it to xargs, but I either get the output in one line, or a multi line input dumped to a single command.
How do you run an arbitrary command on each line via a pipe?

A:

Turns out, you can do this just using a while loop in bash (adapted from this answer):
<whatever your command/output is> | while read line; do echo $line; done

Where echo is your command and using $line as the output for each line, which you can adjust as-needed.

