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The Qualcomm® Linux kernel source is publicly hosted on GitHub and requires no special credentials. Choose the access path that matches your build workflow. Table: Kernel branches
BranchYocto recipeUse case
qcom-6.18.ylinux-qcom_6.18.bbLTS production builds; recommended for SoC bring-up and integration
qcom-nextlinux-qcom-next_git.bbUpstream contribution and validation against the latest kernel

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Yocto workflow

The Yocto workflow accesses the kernel through the meta-qcom layer. The kernel source is fetched automatically by BitBake during the build. Get access to the following repository: Release tags follow the qli-<version> convention (for example, qli-2.0). For available tags, see the Qualcomm Linux release notes - Introduction.

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Sync meta-layers with kas

Run the following commands from your workspace root directory. After syncing, the workspace contains a meta-qcom/ directory. 
# Clone meta-qcom at the target release tag (e.g. -b qli-2.0)
git clone https://github.com/qualcomm-linux/meta-qcom \
    -b <release-tag>
To fetch and unpack the kernel source without running a full build, open a kas shell (replace rb3gen2-core-kit.yml with your machine YML) and run the unpack task: 
kas shell meta-qcom/ci/rb3gen2-core-kit.yml:meta-qcom/ci/qcom-distro.yml

bitbake -c unpack linux-qcom
The kernel source is then available at: 
build/tmp/work-shared/<machine>/kernel-source/
The kernel recipe and version are selected in meta-qcom/conf/machine/include/qcom-base.inc, which every machine configuration inherits: 
# Provider for linux kernel
PREFERRED_PROVIDER_virtual/kernel = "linux-qcom"
PREFERRED_VERSION_virtual/kernel = "6.18%"
Select linux-qcom for LTS BSP or linux-qcom-next for mainline BSP, with PREFERRED_VERSION_virtual/kernel left empty.
The recipe files specify the exact SRCREV and SRCBRANCH for each release: For the full build steps, see Build the kernel using Yocto.

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Standalone workflow

For the standalone workflow (kernel-only builds without a full Yocto image), clone the kernel repository: 
git clone --branch qcom-6.18.y \
    https://github.com/qualcomm-linux/kernel.git kernel
To match the exact source revision used in a release build, check the SRCREV field in meta-qcom/recipes-kernel/linux/linux-qcom_6.18.bb. For the full build steps, see Build the kernel without Yocto.