mount-sysroot is a sysroot mounting tool for initrds, it mounts directories based on kernel cmdline.
dracut-automotive contains a similar amount of dracut scripts for automotive purposes. It's like a small portion of dracut rpm from Fedora/CentOS Stream.
https://gitlab.com/CentOS/automotive/rpms/mount-sysroot
https://gitlab.com/CentOS/automotive/rpms/dracut-automotive
Is mise le meas/Regards,
Eric Curtin