While working on reproducible builds for openSUSE, I found that
our sendmail debuginfo package embeds the build machine's kernel version.

With my reproducibleopensuse tools, I do
debuginfo=--debuginfo vmtype=--vm-type=podman rbk


Here is a helpful part of the diff:

filterdiff strings R*/usr/lib/debug/.dwz/sendmail-8.18.1-1.1.x86_64
--- strings RPMS.1/usr/lib/debug/.dwz/sendmail-8.18.1-1.1.x86_64
+++ strings RPMS.2/usr/lib/debug/.dwz/sendmail-8.18.1-1.1.x86_64
@@ -316,16 +316,16 @@
 /usr/include/bits/types
 ../../include/libsmdb
 ../../include/sm
-/usr/src/debug/sendmail-8.18.1/obj.Linux.6.11.8-1-default.x86_64/libsm
+/usr/src/debug/sendmail-8.18.1/obj.Linux.6.6.63-1-longterm.x86_64/libsm