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-rw-r--r--Modules/ExternalProject-gitupdate.cmake.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/ExternalProject-gitupdate.cmake.in b/Modules/ExternalProject-gitupdate.cmake.in
index 461e323..0de2372 100644
--- a/Modules/ExternalProject-gitupdate.cmake.in
+++ b/Modules/ExternalProject-gitupdate.cmake.in
@@ -5,7 +5,7 @@ cmake_minimum_required(VERSION 3.5)
function(get_hash_for_ref ref out_var err_var)
execute_process(
- COMMAND "@git_EXECUTABLE@" rev-parse "${ref}^{commit}"
+ COMMAND "@git_EXECUTABLE@" rev-parse "${ref}^0"
WORKING_DIRECTORY "@work_dir@"
RESULT_VARIABLE error_code
OUTPUT_VARIABLE ref_hash