$ git clone -n https://src.fedoraproject.org/rpms/vulkan-validation-layers.git /var/lib/mock/f39-build-2162856-50954/root/chroot_tmpdir/scmroot/vulkan-validation-layers
Cloning into '/var/lib/mock/f39-build-2162856-50954/root/chroot_tmpdir/scmroot/vulkan-validation-layers'...
$ git fetch origin 7463ddf703638f6b0ee0e896885b20ff2d064b4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vulkan-validation-layers
 * [new ref]         7463ddf703638f6b0ee0e896885b20ff2d064b4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7463ddf Add missing dependency