$ git clone -n https://gitee.com/wenyuzifang/vulkan-headers.git /var/lib/mock/dist-an23-build-447733-73363/root/chroot_tmpdir/scmroot/vulkan-headers
Cloning into '/var/lib/mock/dist-an23-build-447733-73363/root/chroot_tmpdir/scmroot/vulkan-headers'...
$ git fetch origin 8d6de45103c32f35f2d0e0d93e3ccbbb5daca6f1:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/vulkan-headers
 * [new ref]         8d6de45103c32f35f2d0e0d93e3ccbbb5daca6f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d6de45 Update code from upstream