-bash: scripts/kconfig/merge_config.sh: No such file or directory

[DonatelloX]

Dear All,
on Ubuntu 20.04 LTS, after these commands:
$ repo init -u https://android.googlesource.com/platform/manifest -b android-10.0.0_r32
$ git clone https://github.com/android-rpi/local_manifests .repo/local_manifests -b android10
$ repo sync

$ sudo apt install gcc-arm-linux-gnueabihf libssl-dev
$ cd kernel/rpi

The:
$ ARCH=arm scripts/kconfig/merge_config.sh arch/arm/configs/bcm2709_defconfig kernel/configs/android-base.config kernel/configs/android-recommended.config
does not work:
-bash: scripts/kconfig/merge_config.sh: No such file or directory

I tried again with:
$ repo sync -d
but without success...

Can someone help me?
Thank you