Merge branch 'ba/clone-remote-submodules'

"git clone --recurse-submodules" learned to set up the submodules to ignore commit object names recorded in the superproject gitlink and instead use the commits that happen to be at the tip of the remote-tracking branches from the get-go, by passing the new "--remote-submodules" option. * ba/clone-remote-submodules: clone: add `--remote-submodules` flag