Reproducer:
$ mock -r fedora-rawhide-i386 --shell
...
<mock-chroot> sh-5.0# rpm -q glibc
glibc-2.30.9000-17.fc32.i686
<mock-chroot> sh-5.0# touch blah
touch: setting times of 'blah': Operation not permitted
This works fine after downgrading to glibc-2.30.9000-16.fc32.i686.rpm:
$ mock -r fedora-rawhide-i386 --install ./glibc-2.30.9000-16.fc32.i686.rpm --install ./glibc-minimal-langpack-2.30.9000-16.fc32.i686.rpm --install ./glibc-common-2.30.9000-16.fc32.i686.rpm
$ mock -r fedora-rawhide-i386 --shell
<mock-chroot> sh-5.0# touch blah
... OK ...
More info:
This breaks builds for 'fedora-rawhide-i386' in Copr.