`make dist` fails with current git

[Zack Weinberg]

$ make V=1 dist
make  dist-xz dist-gzip am__post_remove_distdir='@:'
make[1]: Entering directory '/home/zack/projects/gnu/autoconf/ci/b-automake'
make  distdir-am
make[2]: Entering directory '/home/zack/projects/gnu/autoconf/ci/b-automake'
set -e; set -u; \
if test -d ../s-automake/.git; then \
  rm -f ChangeLog-t \
    && /usr/bin/perl ../s-automake/lib/gitlog-to-changelog \
       --amend=../s-automake/.git-log-fix --since='2011-12-28 00:00:00' 
--no-cluster --format '%s%n%n%b' >ChangeLog-t \
    && chmod a-w ChangeLog-t \
    && mv -f ChangeLog-t ChangeLog \
    || exit 1; \
elif test ! -f ../s-automake/ChangeLog; then \
  echo "Source tree is not a git checkout, and no pre-existent" \
       "ChangeLog file has been found there" >&2; \
  exit 1; \
fi
gitlog-to-changelog:../s-automake/.git-log-fix: unused entry: 
3b369e6bbe0fb6d7359398935706c87dd9375cb6
gitlog-to-changelog:../s-automake/.git-log-fix: unused entry: 
22729165f6bb902daeb8a4d8e7cb06982390f327
make[2]: *** [../s-automake/maintainer/maint.mk:48: ChangeLog] Error 1
make[2]: Leaving directory '/home/zack/projects/gnu/autoconf/ci/b-automake'
make[1]: *** [Makefile:3245: distdir] Error 2
make[1]: Leaving directory '/home/zack/projects/gnu/autoconf/ci/b-automake'
make: *** [Makefile:3333: dist] Error 2

Looks like some kind of problem with automatic ChangeLog generation?

The commits it's complaining about are

commit 22729165f6bb902daeb8a4d8e7cb06982390f327
Author: Peter Rosin <peda@lysator.liu.se>
Date:   Fri Feb 17 10:13:15 2012 +0100

    fixup: .git-log-fix should not be executable
    
    * .fix-git-log: Set mode 644.

commit 3b369e6bbe0fb6d7359398935706c87dd9375cb6
Author: Stefano Lattarini <stefano.lattarini@gmail.com>
Date:   Thu Feb 16 22:29:32 2012 +0100

    maint: use AC_PACKAGE_BUGREPORT to avoid duplication
    
    * configure.ac: In the message reporting whether the user is about
    to build an alpha or beta version, use the autoconf-provided
    AC_PACKAGE_BUGREPORT macro instead of duplicating the bur reporting
    address.