$ git clone -n https://gitee.com/src-opencloudos-rpms/vulkan-loader.git /var/lib/mock/dist-oc9-build-49594-14595/root/chroot_tmpdir/scmroot/vulkan-loader
Cloning into '/var/lib/mock/dist-oc9-build-49594-14595/root/chroot_tmpdir/scmroot/vulkan-loader'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vulkan-loader
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 368236f import vulkan-loader-1.3.239.0-3.tl4