$ git clone -n https://gitee.com/opencloudos-stream/vulkan-validation-layers.git /var/lib/mock/dist-oc9-epol-build-185451-80203/root/chroot_tmpdir/scmroot/vulkan-validation-layers
Cloning into '/var/lib/mock/dist-oc9-epol-build-185451-80203/root/chroot_tmpdir/scmroot/vulkan-validation-layers'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/vulkan-validation-layers
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c706a66 Rebuilt for clarifying the packages requirement in BaseOS and AppStream