release.bash: replace aliased git commands with non-aliased equivalents

Change-Id: Ie9a9fd1d4cefc28c8fb5429a975ac50436e29d70
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/394454
Reviewed-by: Chressie Himpel <chressie@google.com>
Reviewed-by: Florian Zenker <floriank@google.com>
diff --git a/release.bash b/release.bash
index 427785d..1a140a3 100755
--- a/release.bash
+++ b/release.bash
@@ -59,8 +59,8 @@
 if [[ $(git branch --list release) ]]; then
 	echo "error: release branch already exists"; exit 1
 fi
-git change release
-git sync
+git codereview change release
+git codereview sync
 
 # Create commit for actual release.
 INPLACE='-i ""' # BSD version of sed expects argument after -i