CVS patches are imported with the timezone offset of +0000 (UTC).
Allow timezone offsets to be calculated from the the local timezone by
adding -l to the command line or specifying cvsimport.l in the config.

This could be made the default behavior, as setting TZ=UTC in the
environment before doing the import is equivalent to the current
behavior.  But since a new default may be an unwelcome surprise to
some, make this new behavior available as an option.

Signed-off-by: Chris Rorvick <>
 Documentation/git-cvsimport.txt |   13 ++++++++++---
 git-cvsimport.perl              |    9 +++++----
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/Documentation/git-cvsimport.txt b/Documentation/git-cvsimport.txt
index 6695ab3..9059ad1 100644
--- a/Documentation/git-cvsimport.txt
+++ b/Documentation/git-cvsimport.txt
@@ -11,9 +11,9 @@ SYNOPSIS
 'git cvsimport' [-o <branch-for-HEAD>] [-h] [-v] [-d <CVSROOT>]
              [-A <author-conv-file>] [-p <options-for-cvsps>] [-P <file>]
-             [-C <git_repository>] [-z <fuzz>] [-i] [-k] [-u] [-s <subst>]
-             [-a] [-m] [-M <regex>] [-S <regex>] [-L <commitlimit>]
-             [-r <remote>] [-R] [<CVS_module>]
+             [-C <git_repository>] [-z <fuzz>] [-i] [-k] [-l] [-u]
+             [-s <subst>] [-a] [-m] [-M <regex>] [-S <regex>]
+             [-L <commitlimit>] [-r <remote>] [-R] [<CVS_module>]
@@ -89,6 +89,13 @@ the old cvs2git tool.
        to avoid noisy changesets. Highly recommended, but off by default
        to preserve compatibility with early imported trees.
+       Use the local timezone for computing the timezone offset of commit
+       timestamps instead of the default of +0000 (UTC).  The `TZ`
+       environment variable can be used to override the default local
+       timezone, possibly useful if you are importing from a non-local
+       repository.
        Convert underscores in tag and branch names to dots.
diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 2f5da9e..927d75c 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -28,9 +28,8 @@ use POSIX qw(strftime dup2 ENOENT);
 use IPC::Open2;
$opt_s,$opt_m,@opt_M,$opt_A,$opt_S,$opt_L, $opt_a, $opt_r, $opt_R);
 $opt_s,$opt_m,@opt_M,$opt_A,$opt_S,$opt_L, $opt_a, $opt_r, $opt_R);
 my (%conv_author_name, %conv_author_email);
 sub usage(;$) {
@@ -40,7 +39,7 @@ sub usage(;$) {
 Usage: git cvsimport     # fetch/update GIT from CVS
        [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
        [-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k]
-       [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]
+       [-l] [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]
        [-r remote] [-R] [CVS_module]
@@ -128,7 +127,7 @@ sub read_repo_config {
-my $opts = "haivmkuo:d:p:r:C:z:s:M:P:A:S:L:R";
+my $opts = "haivmkulo:d:p:r:C:z:s:M:P:A:S:L:R";
 Getopt::Long::Configure( 'no_ignore_case', 'bundling' );
@@ -138,6 +137,8 @@ GetOptions( map { s/:/=s/; /M/ ? "$_\@" : $_ } split( 
/(?!:)/, $opts ) )
     or usage();
 usage if $opt_h;
+$ENV{'TZ'}="UTC" unless $opt_l;
 if (@ARGV == 0) {
                chomp(my $module = `git config --get cvsimport.module`);
                push(@ARGV, $module) if $? == 0;

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