linux-headers-6.12.101+deb12-common - 6.12.101-1~deb12u1 main

This package provides the common kernel header files for Linux kernel
version 6.12.101+deb12, generally used for building out-of-tree kernel
modules. These files are going to be installed into
/usr/src/linux-headers-6.12.101+deb12-common.
.
To obtain a complete set of headers you also need to install the
linux-headers-6.12.101+deb12-(flavour) package, matching the flavour of
the kernel you intend the build for.