config option log.showroot to show the diff of root commits

diff --git a/builtin-write-tree.c b/builtin-write-tree.c
index ca06149f186449407c6536fcc3caa37cd4101ce3..50670dc7bf46c74e95b2e204d05afc077350a19f 100644 (file)
--- a/builtin-write-tree.c
+++ b/builtin-write-tree.c
@@ -50,10 +50,10 @@ int write_tree(unsigned char *sha1, int missing_ok, const char *prefix)
        if (prefix) {
                struct cache_tree *subtree =
                        cache_tree_find(active_cache_tree, prefix);
-               memcpy(sha1, subtree->sha1, 20);
+               hashcpy(sha1, subtree->sha1);
        }
        else
-               memcpy(sha1, active_cache_tree->sha1, 20);
+               hashcpy(sha1, active_cache_tree->sha1);
 
        rollback_lock_file(lock_file);