$ git clone -n https://src.fedoraproject.org/rpms/debconf.git /var/lib/mock/f41-build-side-1-2646035-27211/root/chroot_tmpdir/scmroot/debconf
Cloning into '/var/lib/mock/f41-build-side-1-2646035-27211/root/chroot_tmpdir/scmroot/debconf'...
$ git fetch origin 3b9cf994cfe0d7200115c777e1e8429de6dbae1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/debconf
 * [new ref]         3b9cf994cfe0d7200115c777e1e8429de6dbae1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b9cf99 convert license to SPDX