$ git clone -n https://gitee.com/src-opencloudos-rpms/vulkan-headers.git /var/lib/mock/dist-oc9-build-45455-14591/root/chroot_tmpdir/scmroot/vulkan-headers
Cloning into '/var/lib/mock/dist-oc9-build-45455-14591/root/chroot_tmpdir/scmroot/vulkan-headers'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vulkan-headers
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e76f889 import vulkan-headers-1.3.239.0-3.tl4