where to find sources for arm-none-eabi-gdb?

I'm trying to find the spurces for arm-none-eabi-gdb.  On page

https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm

there is mentioned, that

GDB

You can find the sources to Arm Embedded Binutils at git://sourceware.org/git/binutils-gdb.git. All embedded branches are at users/ARM/embedded-gdb-[version]-branch. You can contribute in the same way that you contrinbute to GCC.

But when I do a git clone of said URL, I cannot find any structure that holds something like users/ARM/embedded-gdb...

Help appreciated.

--

Christoph