$ git clone -n https://gitee.com/wenyuzifang/vulkan-loader.git /var/lib/mock/dist-an23-build-447693-73363/root/chroot_tmpdir/scmroot/vulkan-loader
Cloning into '/var/lib/mock/dist-an23-build-447693-73363/root/chroot_tmpdir/scmroot/vulkan-loader'...
$ git fetch origin 53d0416237c434c44b1b55f420b12877cc497d16:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/vulkan-loader
 * [new ref]         53d0416237c434c44b1b55f420b12877cc497d16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53d0416 Update code from upstream