- Open git bash or command prompt as Admin
- Go to C:\Program Files\Git\etc
- Open inputrc file
- Change default completion-ignore-case value as below
--- inputrc.old 2019-12-13 20:32:51.577869500 +0900
+++ inputrc 2019-12-13 20:32:40.337057100 +0900
@@ -9,7 +9,7 @@
# Ignore case for the command-line-completion functionality
# on: default on a Windows style console
# off: default on a *nix style console
-set completion-ignore-case on
+set completion-ignore-case off
# disable/enable 8bit input
set input-meta on
