I am uploading a NMU to fix this (DELAYED/10).
Please find the debdiff atached.
diff -Nru fuse-umfuse-ext2-0.4/debian/changelog
fuse-umfuse-ext2-0.4/debian/changelog
--- fuse-umfuse-ext2-0.4/debian/changelog 2023-09-29 09:38:29.000000000
+0200
+++ fuse-umfuse-ext2-0.4/debian/changelog 2023-09-29 01:48:00.000000000
+0200
@@ -1,3 +1,10 @@
+fuse-umfuse-ext2 (0.4-1.4) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Convert to source format 3.0. (Closes: #1007446)
+
+ -- Bastian Germann <[email protected]> Thu, 28 Sep 2023 23:48:00 +0000
+
fuse-umfuse-ext2 (0.4-1.3) unstable; urgency=medium
* Non-maintainer upload.
diff -Nru fuse-umfuse-ext2-0.4/debian/patches/fuse-ext2.h.patch
fuse-umfuse-ext2-0.4/debian/patches/fuse-ext2.h.patch
--- fuse-umfuse-ext2-0.4/debian/patches/fuse-ext2.h.patch 1970-01-01
01:00:00.000000000 +0100
+++ fuse-umfuse-ext2-0.4/debian/patches/fuse-ext2.h.patch 2023-09-29
01:48:00.000000000 +0200
@@ -0,0 +1,13 @@
+Description: Add missing header
+Author: Bastian Germann <[email protected]>
+---
+--- fuse-umfuse-ext2-0.4.orig/fuse-ext2/fuse-ext2.h
++++ fuse-umfuse-ext2-0.4/fuse-ext2/fuse-ext2.h
+@@ -31,6 +31,7 @@
+ #include <assert.h>
+ #include <dirent.h>
+ #include <errno.h>
++#include <sys/sysmacros.h>
+
+ #include <fuse.h>
+ #include <ext2fs/ext2fs.h>
diff -Nru fuse-umfuse-ext2-0.4/debian/patches/series
fuse-umfuse-ext2-0.4/debian/patches/series
--- fuse-umfuse-ext2-0.4/debian/patches/series 1970-01-01 01:00:00.000000000
+0100
+++ fuse-umfuse-ext2-0.4/debian/patches/series 2023-09-29 01:48:00.000000000
+0200
@@ -0,0 +1 @@
+fuse-ext2.h.patch
diff -Nru fuse-umfuse-ext2-0.4/debian/source/format
fuse-umfuse-ext2-0.4/debian/source/format
--- fuse-umfuse-ext2-0.4/debian/source/format 1970-01-01 01:00:00.000000000
+0100
+++ fuse-umfuse-ext2-0.4/debian/source/format 2023-09-29 01:48:00.000000000
+0200
@@ -0,0 +1 @@
+3.0 (quilt)
diff -Nru fuse-umfuse-ext2-0.4/fuse-ext2/fuse-ext2.h
fuse-umfuse-ext2-0.4/fuse-ext2/fuse-ext2.h
--- fuse-umfuse-ext2-0.4/fuse-ext2/fuse-ext2.h 2023-09-29 09:38:29.000000000
+0200
+++ fuse-umfuse-ext2-0.4/fuse-ext2/fuse-ext2.h 2012-06-03 18:33:48.000000000
+0200
@@ -31,7 +31,6 @@
#include <assert.h>
#include <dirent.h>
#include <errno.h>
-#include <sys/sysmacros.h>
#include <fuse.h>
#include <ext2fs/ext2fs.h>
