With --print-debs first there are packages on single lines. Then,
without even a newline, comes one long line of packages.
$ sudo debootstrap --print-debs sid /home/sid-chroot http://opensource.nchc.org.tw/debian/
...
tzdata
usr-is-merged
util-linux
zlib1g adduser apt-utils cpio cron cron-daemon-common...

P.S., on the bottom of the man page is a twenty-year old date...