diff --git a/pkgs/tools/text/patchutils/0.4.2.nix b/pkgs/tools/text/patchutils/0.4.2.nix
index 1b2c0d6b1f3e..d3d26c11481d 100644
--- a/pkgs/tools/text/patchutils/0.4.2.nix
+++ b/pkgs/tools/text/patchutils/0.4.2.nix
@@ -5,4 +5,5 @@ callPackage ./generic.nix (args // {
   sha256 = "sha256-iHWwll/jPeYriQ9s15O+f6/kGk5VLtv2QfH+1eu/Re0=";
   # for gitdiff
   extraBuildInputs = [ python3 ];
+  patches = [ ./Revert-Fix-grepdiff-test.patch ];
 })
diff --git a/pkgs/tools/text/patchutils/Revert-Fix-grepdiff-test.patch b/pkgs/tools/text/patchutils/Revert-Fix-grepdiff-test.patch
new file mode 100644
index 000000000000..434378a219ac
--- /dev/null
+++ b/pkgs/tools/text/patchutils/Revert-Fix-grepdiff-test.patch
@@ -0,0 +1,38 @@
+From 13672e53371ea9593130bdca178f3b8b2e174032 Mon Sep 17 00:00:00 2001
+From: Alyssa Ross <hi@alyssa.is>
+Date: Thu, 25 Apr 2024 09:10:54 +0200
+Subject: [PATCH] Revert "Fix grepdiff test"
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This reverts commit a6538753a51db973a05c9034ed78f2dd946453db.
+
+There's no need for an escape here, because POSIX regexes don't treat
+'+' specially if it's at the start of the experssion.  musl rejects
+the version with the backslash.
+
+I'm still not clear why this change was made in the first place, but
+reverting it seems to make the test pass on both glibc and musl…
+
+Link: https://github.com/twaugh/patchutils/issues/61
+---
+ tests/grepdiff1/run-test | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/grepdiff1/run-test b/tests/grepdiff1/run-test
+index c4311f8..c3cebdd 100755
+--- a/tests/grepdiff1/run-test
++++ b/tests/grepdiff1/run-test
+@@ -20,7 +20,7 @@ cat << EOF > diff
+ +b
+ EOF
+ 
+-${GREPDIFF} '\+a' diff 2>errors >index || exit 1
++${GREPDIFF} '+a' diff 2>errors >index || exit 1
+ [ -s errors ] && exit 1
+ 
+ cat << EOF | cmp - index || exit 1
+-- 
+2.44.0
+