While working on reproducible builds for openSUSE, I found that
our lsof package varies as it includes the build machine's hostname

/usr/bin/lsof differs in ELF section .rodata
--- old /usr/bin/lsof (objdump)
+++ new /usr/bin/lsof (objdump)
@@ -1015,7 +1015,7 @@
  25f20 6c617465 73742046 41513a20 25730a00  latest FAQ: %s..
  25f30 20202020 636f6e66 69677572 6174696f      configuratio
  25f40 6e20696e 666f3a20 25730a00 6275696c  n info: %s..buil
- 25f50 64686f73 74610061 6275696c 64002020  dhosta.abuild.
+ 25f50 64686f73 74620061 6275696c 64002020  dhostb.abuild.
  25f60 2020636f 6e737472 75637465 64202573    constructed %s
  25f70 3a202573 25732573 0a002020 20206275  : %s%s%s..    bu
  25f80 696c6465 72277320 636f6d6d 656e743a  ilder's comment:
@@ -1158,7 +1158,7 @@
  26810 57657272 6f723d72 65747572 6e2d7479  Werror=return-ty
  26820 7065202d 666c746f 3d617574 6f202d57  pe -flto=auto -W
  26830 616c6c20 2d576e6f 2d756e75 73656400  all -Wno-unused.
- 26840 4c696e75 78206275 696c6468 6f737461  Linux buildhosta
+ 26840 4c696e75 78206275 696c6468 6f737462  Linux buildhostb
  26850 20352e31 372e372d 312d6465 6661756c   5.17.7-1-defaul
  26860 74202331 20534d50 20505245 454d5054  t #1 SMP PREEMPT
  26870 20546875 204d6179 20313220 31323a33   Thu May 12 12:3 


This seems to come from the Configure script that calls
uname -n
and another uname variant such as uname -a

please fix (ideally upstream)

If it is not possible to always omit or normalize the hostname,
it should be possible to override it with $HOSTNAME or to normalize it when
$SOURCE_DATE_EPOCH is set.

For example patches see
https://github.com/BenLangmead/bowtie2/pull/210/files
https://github.com/heimdal/heimdal/pull/332/files
https://build.opensuse.org/request/show/555498