The 5.2 i386 source RPM doesn't contain the 2.0.36 kernel
source, but rather a 2.0.35 tarball, plus 2.0.36pre-patch-14
which definitely doesn't match it.
The starting point in the i386 kernel rpm is 2.0.35. There
are patches that bring that tarball to 2.0.36 and beyond. The
Red Hat kernel is seldom in sync with the "official" ftp.kernel.org
version because of security patches and features that are not
supported in the "official" version of the kernel.
That kernel reports its version as 2.0.36, hence the RPM version.