- my @cmd = (@git, qw(update-ref -m), "dgit import-dsc: $dscfn",
- $dstbranch, $mergeinputs[0]{Commit});
+ my $newhash = $mergeinputs[0]{Commit};
+
+ if ($oldhash) {
+ if ($force > 0) {
+ progress "Import, forced update - synthetic orphan git history.";
+ } elsif ($force < 0) {
+ progress "Import, merging.";
+ my $tree = cmdoutput @git, qw(rev-parse), "$newhash:";
+ my $version = getfield $dsc, 'Version';
+ $newhash = make_commit_text <<END;
+tree $tree
+parent $newhash
+parent $oldhash
+
+Merge $package ($version) import into $dstbranch
+END
+ } else {
+ die; # caught earlier
+ }
+ }
+
+ my @cmd = (@git, qw(update-ref -m), "dgit import-dsc: $info",
+ $dstbranch, $newhash);