Found on the latest staging branch. The diffoscope log produced by:

--8<---------------cut here---------------start------------->8---
diffoscope --exclude-command '/gnu/store/.*/bin/stat' --text=emacs.diffoscope /gnu/store/cjmgl8820dhxb400q9zv90b1a1z0px14-emacs-26.1{,-check}
--8<---------------cut here---------------end--------------->8---

The 'stat' command output was muted to ignore the many occurrences of
differing link numbers (and reduce the attached log size).

Here's an excerpt:

--8<---------------cut here---------------start------------->8---
--- /gnu/store/cjmgl8820dhxb400q9zv90b1a1z0px14-emacs-26.1
+++ /gnu/store/cjmgl8820dhxb400q9zv90b1a1z0px14-emacs-26.1-check
├── bin
│ ├── .emacs-26.1-real
│ │ ├── /gnu/store/02iklp4swqs0ipxhg5x9b2shmj6b30h1-binutils-2.31.1/bin/readelf --wide --decompress --hex-dump=.data {}
│ │ │ @@ -13602,17 +13602,17 @@
│ │ │    0x0068f670 9caa9600 00000000 01000000 00000000 ................
│ │ │    0x0068f680 ffffffff ffffffff 00000000 00000000 ................
│ │ │    0x0068f690 07af9600 00000000 07000000 00000000 ................
│ │ │    0x0068f6a0 ffffffff ffffffff 00000000 00000000 ................
│ │ │    0x0068f6b0 94aa9600 00000000 09000000 00000000 ................
│ │ │    0x0068f6c0 ffffffff ffffffff 00000000 00000000 ................
│ │ │    0x0068f6d0 8aaa9600 00000000 8e720100 00000000 .........r......
│ │ │ -  0x0068f6e0 ebf66800 00000000 36f00100 00000000 ..h.....6.......
│ │ │ -  0x0068f6f0 fbf66800 00000000 ce3d3800 00000000 ..h......=8.....
│ │ │ -  0x0068f700 0bf76800 00000000 22e03b00 00000000 ..h.....".;.....
│ │ │ +  0x0068f6e0 ebf66800 00000000 12ec0100 00000000 ..h.............
│ │ │ +  0x0068f6f0 fbf66800 00000000 4abd2e00 00000000 ..h.....J.......
│ │ │ +  0x0068f700 0bf76800 00000000 c2313100 00000000 ..h......11.....
│ │ │    0x0068f710 00000000 00000000 06000012 00000040 ...............@
│ │ │    0x0068f720 5bf76800 00000000 7cf76800 00000000 [.h.....|.h.....
│ │ │    0x0068f730 9df76800 00000000 32000000 00000000 ..h.....2.......
│ │ │    0x0068f740 b6b1a700 00000000 fcf96800 00000000 ..........h.....
│ │ │    0x0068f750 00000000 00000000 50280000 00000000 ........P(......
│ │ │    0x0068f760 6bf76800 00000000 10df4300 00000000 k.h.......C.....
│ │ │    0x0068f770 00000000 00000000 9c000000 00000000 ................
│ │ ├── /gnu/store/02iklp4swqs0ipxhg5x9b2shmj6b30h1-binutils-2.31.1/bin/readelf --wide --decompress --hex-dump=,bss {}
--8<---------------cut here---------------end--------------->8---