bname.buf,
                               (flags & REF_ISBROKEN) ? "broken"
                               : (flags & REF_ISSYMREF) ? target
-                              : find_unique_abbrev(oid.hash, DEFAULT_ABBREV));
+                              : find_unique_abbrev(&oid, DEFAULT_ABBREV));
                }
                delete_branch_config(bname.buf);
 
                OPT_BOOL('l', "create-reflog", &reflog, N_("create the branch's reflog")),
                OPT_BOOL(0, "edit-description", &edit_description,
                         N_("edit the description for the branch")),
-               OPT__FORCE(&force, N_("force creation, move/rename, deletion")),
+               OPT__FORCE(&force, N_("force creation, move/rename, deletion"), PARSE_OPT_NOCOMPLETE),
                OPT_MERGED(&filter, N_("print only branches that are merged")),
                OPT_NO_MERGED(&filter, N_("print only branches that are not merged")),
                OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),