git: make manual reproducible

This makes the git HTML manual reproducible.

It also removes the `git.info` manual, since this one is
basically entirely broken anyway. This likely happened
when we migrated from asciidoc to asciidoctor in #102020.
I don't suggest going back to asciidoc: that would
re-introduce a python2 dependency and another
reproducibility issue with the HTML docs.

Co-Authored-By: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>

pkgs/applications/version-management/git-and-tools/git/default.nix

@@ -1,4 +1,5 @@
 { fetchurl, stdenv, buildPackages
+, fetchpatch
 , curl, openssl, zlib, expat, perlPackages, python3, gettext, cpio
 , gnugrep, gnused, gawk, coreutils # needed at runtime by git-filter-branch etc
 , openssh, pcre2
@@ -51,6 +52,12 @@ stdenv.mkDerivation {
     ./ssh-path.patch
     ./git-send-email-honor-PATH.patch
     ./installCheck-path.patch
+    (fetchpatch {
+      # https://github.com/git/git/pull/925
+      name = "make-manual-reproducible.patch";
+      url = "https://github.com/git/git/commit/7a68e9e0b8eda91eb576bbbc5ed66298f3ab761c.patch";
+      sha256 = "02naws82pd3vvwrrgqn91kid8qkjihyjaz1ahgjz8qlmnn2avf5n";
+    })
   ];
 
   postPatch = ''
@@ -229,8 +236,8 @@ stdenv.mkDerivation {
         notSupported $out/libexec/git-core/git-send-email
       '')
 
-   + stdenv.lib.optionalString withManual ''# Install man pages and Info manual
-       make -j $NIX_BUILD_CORES -l $NIX_BUILD_CORES USE_ASCIIDOCTOR=1 PERL_PATH="${buildPackages.perl}/bin/perl" cmd-list.made install install-html install-info \
+   + stdenv.lib.optionalString withManual ''# Install man pages
+       make -j $NIX_BUILD_CORES -l $NIX_BUILD_CORES USE_ASCIIDOCTOR=1 PERL_PATH="${buildPackages.perl}/bin/perl" cmd-list.made install install-html \
          -C Documentation ''
 
    + (if guiSupport then ''