commit - 0fbd721f10df717372951e1ea217faef10b4cfb0
commit + 9c4b8182fcfabf42c6dc904dfccd3c4aa9bb4bcf
blob - 746cf514efa8f22407e5ff7839677223a535a8a1
blob + 74fa300abb148f521b2bc42cb04ce259732327c3
--- got/got.c
+++ got/got.c
@@ -394,13 +394,15 @@ cmd_update(int argc, char *argv[])
 	struct got_worktree *worktree = NULL;
 	char *worktree_path = NULL;
 	struct got_object_id *commit_id = NULL;
-	const char *commit_id_str = NULL;
+	char *commit_id_str = NULL;
 	int ch;
 
 	while ((ch = getopt(argc, argv, "c:")) != -1) {
 		switch (ch) {
 		case 'c':
-			commit_id_str = optarg;
+			commit_id_str = strdup(optarg);
+			if (commit_id_str == NULL)
+				return got_error_from_errno();
 			break;
 		default:
 			usage();
@@ -445,6 +447,9 @@ cmd_update(int argc, char *argv[])
 		if (error != NULL)
 			goto done;
 		error = got_ref_resolve(&commit_id, repo, head_ref);
+		if (error != NULL)
+			goto done;
+		error = got_object_id_str(&commit_id_str, commit_id);
 		if (error != NULL)
 			goto done;
 	} else {
@@ -470,9 +475,12 @@ cmd_update(int argc, char *argv[])
 	    update_progress, NULL, checkout_cancel, NULL);
 	if (error != NULL)
 		goto done;
+
+	printf("Updated to commit %s\n", commit_id_str);
 done:
 	free(worktree_path);
 	free(commit_id);
+	free(commit_id_str);
 	return error;
 }
 
blob - 4fb24d61a698847ebfe40cb77aed98a0c3f92799
blob + d585d9b49ff2ad547568fa364a31746e807e66bf
--- regress/cmdline/common.sh
+++ regress/cmdline/common.sh
@@ -26,6 +26,12 @@ function git_commit
 	(cd $repo && git commit -q -a "$@")
 }
 
+function git_show_head
+{
+	local repo="$1"
+	(cd $repo && git show --no-patch --pretty='format:%H')
+}
+
 function make_test_tree
 {
 	repo="$1"
blob - 416b75e596b98a2a99f5166940a851d6f9647589
blob + 736d20ef92439eec6ec53ed167e5b6461df3395d
--- regress/cmdline/update.sh
+++ regress/cmdline/update.sh
@@ -29,6 +29,9 @@ function test_update_basic {
 	git_commit $testroot/repo -m "modified alpha"
 
 	echo "U  alpha" > $testroot/stdout.expected
+	echo -n "Updated to commit " >> $testroot/stdout.expected
+	git_show_head $testroot/repo >> $testroot/stdout.expected
+	echo >> $testroot/stdout.expected
 
 	(cd $testroot/wt && got update > $testroot/stdout)