Description of problem:

In a Fedora Rawhide mock shell:

<mock-chroot> sh-5.0# cat /etc/fedora-release 
Fedora release 34 (Rawhide)
<mock-chroot> sh-5.0# rpm -q bash
bash-5.0.17-2.fc33.x86_64
<mock-chroot> sh-5.0# [ -r /bin/sh ] && echo OK || echo not OK
not OK
<mock-chroot> sh-5.0# /bin/[ -r /bin/sh ] && echo OK || echo not OK
OK

However, in a Fedora 33 mock shell:

<mock-chroot> sh-5.0# cat /etc/fedora-release
Fedora release 33 (Thirty Three)
<mock-chroot> sh-5.0# rpm -q bash
bash-5.0.17-2.fc33.x86_64
<mock-chroot> sh-5.0# [ -r /bin/sh ] && echo OK || echo not OK
OK
<mock-chroot> sh-5.0# /bin/[ -r /bin/sh ] && echo OK || echo not OK
OK

Version-Release number of selected component (if applicable):

bash-5.0.17-2.fc33.x86_64
(It works in Fedora 33, but is broken in Fedora rawhide)

How reproducible: Many attempts were made...


Steps to Reproduce:
1. mock --root fedora-rawhide-x86_64 --scrub=all
2. mock --root fedora-rawhide-x86_64 --init
3. mock --root fedora-rawhide-x86_64 --shell
4. [ -r /bin/sh ] && echo OK || echo not OK

Actual results:

not OK

Expected results:

OK

Additional info:

The command /bin/[ gives the correct result, the built-in [ does not.
Using
[ -e /bin/sh ] && echo OK || echo not OK
instead gives the expected result.