chore: fix test helper name

Author: pbrisbin

test/build_pkg/build-tarball.t

@@ -3,7 +3,7 @@
 Build tarball and rename it in to_install correctly
 NOTE: this needs to have non-root user to be able to build
 
-  $ git_clone
+  $ setup_git_test
   > export to_install=( "$cache/downgrade/downgrade-2.0-1-any.pkg.tar.gz" "$cache/downgrade/downgrade-11.5.5-3c3182bb-any.gitpkg.tar.gz" "https://archive.archlinux.org/packages/x/xorg-twm/xorg-twm-1.0.7-1-x86_64.pkg.tar.xz" ) 
   > build_pkg
   > to_install_new=( "$cache/downgrade/downgrade-2.0-1-any.pkg.tar.gz" "$cache/downgrade/downgrade-11.5.5-any.pkg.tar.zst" "https://archive.archlinux.org/packages/x/xorg-twm/xorg-twm-1.0.7-1-x86_64.pkg.tar.xz" )