dgit: Fail early when the archive/ tag already exists.

Suggest using a new version number.

We need a new --force option to override this check.

Closes: #935802
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 7 insertions, 0 deletions

diff --git a/dgit.1 b/dgit.1
index 8969e2f..e619188 100644
--- a/dgit.1
+++ b/dgit.1
@@ -1293,6 +1293,13 @@ The result is a fresh import,
 discarding the git history
 that the person who pushed that .dsc was working with.
 .TP
+.B \-\-force-reusing-version
+Carry on even though this involves reusing a version number
+of a previous push or upload.
+It is normally best to give different versions different numbers.
+Some servers (including, usually, the Debian server)
+will reject attempts to reuse or replace already-pushed versions.
+.TP
 .B \-\-force-uploading-binaries
 Carry on and
 upload binaries