$ git clone -n https://src.fedoraproject.org/rpms/iwd.git /var/lib/mock/f40-build-1737333-24672/root/chroot_tmpdir/scmroot/iwd
Cloning into '/var/lib/mock/f40-build-1737333-24672/root/chroot_tmpdir/scmroot/iwd'...
$ git fetch origin 547d495d279ff2b1bf11ac2fb3b8916e9a85ca75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iwd
 * [new ref]         547d495d279ff2b1bf11ac2fb3b8916e9a85ca75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 547d495 2.19