gahr@dev.ptrcrt.ch:~/github/neomutt % git --version
git version 2.15.1
gahr@dev.ptrcrt.ch:~/github/neomutt % git ls-tree -r --name-only
usage: git ls-tree [<options>] <tree-ish> [<path>...]

    -d                    only show trees
    -r                    recurse into subtrees
    -t                    show trees when recursing
    -z                    terminate entries with NUL byte
    -l, --long            include object size
    --name-only           list only filenames
    --name-status         list only filenames
    --full-name           use full path names
    --full-tree           list entire tree; not just current directory (implies --full-name)
    --abbrev[=<n>]        use <n> digits to display SHA-1s

gahr@dev.ptrcrt.ch:~/github/neomutt %