$ git clone -n https://src.fedoraproject.org/rpms/vulkan-volk.git /var/lib/mock/f41-build-856389-167591/root/chroot_tmpdir/scmroot/vulkan-volk
Cloning into '/var/lib/mock/f41-build-856389-167591/root/chroot_tmpdir/scmroot/vulkan-volk'...
$ git fetch origin 20a958db29126a02957fb68ca2454e521cbff016:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vulkan-volk
 * [new ref]         20a958db29126a02957fb68ca2454e521cbff016 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20a958d Update to 1.3.296.0 SDK