$ git clone -n https://src.fedoraproject.org/rpms/iwd.git /var/lib/mock/f40-build-768914-125433/root/chroot_tmpdir/scmroot/iwd
Cloning into '/var/lib/mock/f40-build-768914-125433/root/chroot_tmpdir/scmroot/iwd'...
$ git fetch origin 5d31c22846a9be54f8cc44987f457a2a8cc50517:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iwd
 * [new ref]         5d31c22846a9be54f8cc44987f457a2a8cc50517 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d31c22 2.12