1 files changed, 1 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index 9da9179afd..aba029315c 100644
--- a/cache.h
+++ b/cache.h
@@ -311,6 +311,7 @@ extern char *get_index_file(void);
 extern char *get_graft_file(void);
 extern int set_git_dir(const char *path);
 extern const char *get_git_work_tree(void);
+extern void set_git_work_tree(const char *tree);
 
 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"