Test: force push range-diff

[yuval-block]

Throwaway PR to exercise the range-diff action end to end. Will be closed.

[github-actions]

range-diff for force push 11337b5f79 → 2da1497a0e: 1 unchanged, 2 dropped, 2 added

^{reproduce: git range-diff 7c8d65b..11337b5 7c8d65b..2da1497}

1: 3dab6c8a30 = 1: 3dab6c8a30 Add scratch file

2: affa39dda1 < -: ---------- Revise beta

3: 11337b5f79 < -: ---------- Append delta

-: ---------- > 2: 399a4b2045 Revise beta

-: ---------- > 3: 2da1497a0e Append epsilon

[github-actions]

range-diff for force push 2da1497a0e → 30b571491a: 1 modified, 2 unchanged, 1 added

^{reproduce: git range-diff 7c8d65b..2da1497 7c8d65b..30b5714}

1:  3dab6c8a30 = 1:  3dab6c8a30 Add scratch file
2:  399a4b2045 = 2:  399a4b2045 Revise beta
3:  2da1497a0e ! 3:  86f1c032da Append epsilon
-:  ---------- > 4:  30b571491a Add eta

3: 2da1497a0e ! 3: 86f1c032da Append epsilon

@@ Metadata
 Author: Yuval Kogman <nothingmuch@woobling.org>
 
  ## Commit message ##
-    Append epsilon
+    Append epsilon and zeta
+
+    Zeta was missing from the first attempt.
 
  ## scratch.txt ##
 @@
@@ scratch.txt
  beta (v2, reworded)
  gamma
 +epsilon
++zeta

[github-actions]

range-diff for force push 30b571491a → 7e782931fa: 4 unchanged, 1 added

^{reproduce: git range-diff 7c8d65b..30b5714 7c8d65b..7e78293}

1:  3dab6c8a30 = 1:  3dab6c8a30 Add scratch file
2:  399a4b2045 = 2:  399a4b2045 Revise beta
3:  86f1c032da = 3:  86f1c032da Append epsilon and zeta
-:  ---------- > 4:  a49a82e213 Append epsilon and zeta
4:  30b571491a = 5:  7e782931fa Add eta

[yuval-block]

🤖 Closing: this PR only existed to exercise the action end to end. The three range-diff comments above are the record.