$ git clone -n https://src.fedoraproject.org/rpms/vulkan-tools.git /var/lib/mock/f40-build-788457-135161/root/chroot_tmpdir/scmroot/vulkan-tools
Cloning into '/var/lib/mock/f40-build-788457-135161/root/chroot_tmpdir/scmroot/vulkan-tools'...
$ git fetch origin 3975b241461e5e11054bb5ee7881fc04bee93fc3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vulkan-tools
 * [new ref]         3975b241461e5e11054bb5ee7881fc04bee93fc3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3975b24 Update to 1.3.275.0 SDK