Use force flag when pushing tags

Newer versions of git push will not overwrite an existing tag unless
the client specifies + on the refspec (or --force).  (This is a
client-side check.)

So add this flag where appropriate, both in dgit itself, and in the
test suite.

1 files changed, 1 insertions, 1 deletions

diff --git a/dgit b/dgit
index c84fb80..fdc922e 100755
--- a/dgit
+++ b/dgit
@@ -1693,7 +1693,7 @@ sub dopush ($) {
 	create_remote_git_repo();
     }
     runcmd_ordryrun @git, qw(push),access_giturl(),
-        $forceflag."HEAD:".rrref(), "refs/tags/$tag";
+        $forceflag."HEAD:".rrref(), $forceflag."refs/tags/$tag";
     runcmd_ordryrun @git, qw(update-ref -m), 'dgit push', lrref(), 'HEAD';
 
     if ($we_are_responder) {