diff --git a/.github/workflows/assimp.yml b/.github/workflows/assimp.yml
index f4d5e1bcea..a9b599bdfe 100644
--- a/.github/workflows/assimp.yml
+++ b/.github/workflows/assimp.yml
@@ -21,6 +21,9 @@ jobs:
             name: Linux
             nuke_invoke: ./build.sh
             extras: |
+              # We need to adjust APT sources for multiarch. Use the ones corresponding to
+              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
+              # for armhf and arm64.
               sudo tee /etc/apt/sources.list << EOF
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main universe
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main universe
diff --git a/.github/workflows/glfw.yml b/.github/workflows/glfw.yml
index a651c76436..2e5acc7230 100644
--- a/.github/workflows/glfw.yml
+++ b/.github/workflows/glfw.yml
@@ -21,6 +21,9 @@ jobs:
             name: Linux
             nuke_invoke: ./build.sh
             extras: |
+              # We need to adjust APT sources for multiarch. Use the ones corresponding to
+              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
+              # for armhf and arm64.
               sudo tee /etc/apt/sources.list << EOF
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main multiverse restricted universe
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe
diff --git a/.github/workflows/openal-soft.yml b/.github/workflows/openal-soft.yml
index 256ff70881..76188dad29 100644
--- a/.github/workflows/openal-soft.yml
+++ b/.github/workflows/openal-soft.yml
@@ -21,6 +21,9 @@ jobs:
             name: Linux
             nuke_invoke: ./build.sh
             extras: |
+              # We need to adjust APT sources for multiarch. Use the ones corresponding to
+              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
+              # for armhf and arm64.
               sudo tee /etc/apt/sources.list << EOF
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main multiverse restricted universe
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe
diff --git a/.github/workflows/sdl2.yml b/.github/workflows/sdl2.yml
index 2238f15495..5cf5caaf01 100644
--- a/.github/workflows/sdl2.yml
+++ b/.github/workflows/sdl2.yml
@@ -56,6 +56,9 @@ jobs:
         uses: Beyley/run-as-1804@239b211a2ca687388b6251d6dab22cb90ac0391d
         with:
           command: |
+            # We need to adjust APT sources for multiarch. Use the ones corresponding to
+            # Ubuntu 18.04 with appropriate `arch` values. ports.ubuntu.com is required
+            # for armhf and arm64.
             tee /etc/apt/sources.list << EOF
             deb [arch=amd64] http://archive.ubuntu.com/ubuntu bionic main multiverse restricted universe
             deb [arch=amd64] http://archive.ubuntu.com/ubuntu bionic-backports main multiverse restricted universe
diff --git a/.github/workflows/swiftshader.yml b/.github/workflows/swiftshader.yml
index 7342900276..2715ebde8e 100644
--- a/.github/workflows/swiftshader.yml
+++ b/.github/workflows/swiftshader.yml
@@ -21,6 +21,9 @@ jobs:
             name: Linux
             nuke_invoke: ./build.sh
             extras: |
+              # We need to adjust APT sources for multiarch. Use the ones corresponding to
+              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
+              # for armhf and arm64.
               sudo tee /etc/apt/sources.list << EOF
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main multiverse restricted universe
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe
diff --git a/.github/workflows/vulkan-loader.yml b/.github/workflows/vulkan-loader.yml
index ac1d97b81d..4b6b9fb1dc 100644
--- a/.github/workflows/vulkan-loader.yml
+++ b/.github/workflows/vulkan-loader.yml
@@ -21,6 +21,9 @@ jobs:
             name: Linux
             nuke_invoke: ./build.sh
             extras: |
+              # We need to adjust APT sources for multiarch. Use the ones corresponding to
+              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
+              # for armhf and arm64.
               sudo tee /etc/apt/sources.list << EOF
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main multiverse restricted universe
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe
diff --git a/.github/workflows/wgpu.yml b/.github/workflows/wgpu.yml
index 238376f2d7..f3cdfdcd3c 100644
--- a/.github/workflows/wgpu.yml
+++ b/.github/workflows/wgpu.yml
@@ -21,6 +21,9 @@ jobs:
             name: Linux
             nuke_invoke: ./build.sh
             extras: |
+              # We need to adjust APT sources for multiarch. Use the ones corresponding to
+              # Ubuntu 22.04 with appropriate `arch` values. ports.ubuntu.com is required
+              # for armhf and arm64.
               sudo tee /etc/apt/sources.list << EOF
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy main multiverse restricted universe
               deb [arch=amd64] http://archive.ubuntu.com/ubuntu jammy-backports main multiverse restricted universe