From: Junio C Hamano <hidden> Date: 2021-02-26 23:21:20
Junio C Hamano [off-list ref] writes:
so that you can prepare
...
beforehand and then eval the output from the script you wrote with
"git for-each-ref".
Ehhh, not "eval the output from the script", but "eval the script".
In essense, you use "for-each-ref --format" as a tool to write a
script, and then execute it.