$ git clone -n https://src.fedoraproject.org/rpms/NiaAML-GUI.git /var/lib/mock/f41-build-side-1-2749569-31004/root/chroot_tmpdir/scmroot/NiaAML-GUI
Cloning into '/var/lib/mock/f41-build-side-1-2749569-31004/root/chroot_tmpdir/scmroot/NiaAML-GUI'...
$ git fetch origin 6b4d417148e8d1c3e3d68abb882d367cde66833a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/NiaAML-GUI
 * [new ref]         6b4d417148e8d1c3e3d68abb882d367cde66833a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b4d417 Update to 0.3.2 upstream release