$ git clone -n https://src.fedoraproject.org/rpms/vkd3d.git /var/lib/mock/f39-build-1588897-38229/root/chroot_tmpdir/scmroot/vkd3d
Cloning into '/var/lib/mock/f39-build-1588897-38229/root/chroot_tmpdir/scmroot/vkd3d'...
$ git fetch origin fb23011c7f49d4f34caa058a96d438723708ef58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vkd3d
 * [new ref]         fb23011c7f49d4f34caa058a96d438723708ef58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb23011 Update to 1.9