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-rw-r--r--builtin/fetch.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 6ec7c07..e014032 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -98,6 +98,8 @@ static int git_fetch_config(const char *k, const char *v, void *cb)
static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
{
+ BUG_ON_OPT_NEG(unset);
+
/*
* "git fetch --refmap='' origin foo"
* can be used to tell the command not to store anywhere