$ git clone -n https://src.fedoraproject.org/rpms/duplicity.git /var/lib/mock/f40-build-1944974-25179/root/chroot_tmpdir/scmroot/duplicity
Cloning into '/var/lib/mock/f40-build-1944974-25179/root/chroot_tmpdir/scmroot/duplicity'...
$ git fetch origin 62417f44e210ea37fe362a583ac81b9d307a8faa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/duplicity
 * [new ref]         62417f44e210ea37fe362a583ac81b9d307a8faa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62417f4 3.0.1