clone|fetch: support passing --prune(-tags) to `git fetch'

We need to be able to get rid of removed branches and tags on
the remote.  --prune-tags is implied for non-objstore repos,
and incompatible with objstore repos.

1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/public-inbox-fetch.pod b/Documentation/public-inbox-fetch.pod
index c78ffc0b..c5e73d38 100644
--- a/Documentation/public-inbox-fetch.pod
+++ b/Documentation/public-inbox-fetch.pod
@@ -61,6 +61,12 @@ there are no updates:
         public-inbox-fetch -q --exit-code && public-inbox-index
         test $? -eq 0 || exit $?
 
+=item -p
+
+=item --prune
+
+Pass the C<--prune> and C<--prune-tags> flags to L<git-fetch(1)> calls.
+
 =item -v
 
 =item --verbose