dgit: honour more pre-tree git config options in our private trees

These share the user's object store and we should manipulate the
object store the way the user wants.  In particular,
core.sharedRepository is important.

Prompted by #867603, which is the same bug in dgit-badcommit-fixup.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 4 insertions, 1 deletions

diff --git a/dgit b/dgit
index edb2428..be277f3 100755
--- a/dgit
+++ b/dgit
@@ -1713,7 +1713,10 @@ sub prep_ud (;$) {
 sub mktree_in_ud_here () {
     runcmd qw(git init -q);
     runcmd qw(git config gc.auto 0);
-    foreach my $copy (qw(user.email user.name user.useConfigOnly)) {
+    foreach my $copy (qw(user.email user.name user.useConfigOnly
+                         core.sharedRepository
+                         core.compression core.looseCompression
+                         core.bigFileThreshold core.fsyncObjectFiles)) {
 	my $v = $gitcfgs{local}{$copy};
 	next unless $v;
 	runcmd qw(git config), $copy, $_ foreach @$v;