$ git clone -n https://src.fedoraproject.org/rpms/duply.git /var/lib/mock/f40-build-1994951-43852/root/chroot_tmpdir/scmroot/duply
Cloning into '/var/lib/mock/f40-build-1994951-43852/root/chroot_tmpdir/scmroot/duply'...
$ git fetch origin 1feb979f21899e3b0aa18268fcb3aa568d75ea76:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/duply
 * [new ref]         1feb979f21899e3b0aa18268fcb3aa568d75ea76 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1feb979 Update to 2.5.1.