$ git clone -n https://gitee.com/src-opencloudos-rpms/vulkan-loader /var/lib/mock/dist-oc8-build-57132-15252/root/chroot_tmpdir/scmroot/vulkan-loader
Cloning into '/var/lib/mock/dist-oc8-build-57132-15252/root/chroot_tmpdir/scmroot/vulkan-loader'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vulkan-loader
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9be2ab6 import vulkan-loader-1.3.239.0-1.tl3