$ git clone -n https://src.fedoraproject.org/rpms/perl-DBI.git /var/lib/mock/f43-perl-60964685-6587000/root/chroot_tmpdir/scmroot/perl-DBI
Cloning into '/var/lib/mock/f43-perl-60964685-6587000/root/chroot_tmpdir/scmroot/perl-DBI'...
$ git fetch origin 7e08a30690d56f8d76418084d303d35ca1249fbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBI
 * [new ref]         7e08a30690d56f8d76418084d303d35ca1249fbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e08a30 Perl 5.42 re-rebuild of bootstrapped packages