$ git clone -n https://src.fedoraproject.org/rpms/duply.git /var/lib/mock/f41-build-side-1-3049466-37889/root/chroot_tmpdir/scmroot/duply
Cloning into '/var/lib/mock/f41-build-side-1-3049466-37889/root/chroot_tmpdir/scmroot/duply'...
$ git fetch origin a80771efa013d69a95eef12bcf9ba9b30bdfbe88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/duply
 * [new ref]         a80771efa013d69a95eef12bcf9ba9b30bdfbe88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a80771e Update to 2.5.3.