Set pwd for precommit to support run it in any directory

Author: ThomsonTan

scripts/precommit.sh

@@ -1 +1,7 @@
-cargo update && cargo fmt --all && ./scripts/lint.sh && ./scripts/test.sh
+REPO_ROOT=$(dirname $( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd ))
+
+pushd "${REPO_ROOT}" > /dev/null
+
+cargo update && cargo fmt --all && ./scripts/lint.sh && ./scripts/test.sh
+
+popd > /dev/null