$ git clone -n https://src.fedoraproject.org/rpms/perl-Date-Manip.git /var/lib/mock/f42-build-side-1-3537092-46559/root/chroot_tmpdir/scmroot/perl-Date-Manip
Cloning into '/var/lib/mock/f42-build-side-1-3537092-46559/root/chroot_tmpdir/scmroot/perl-Date-Manip'...
$ git fetch origin a8b27154ec7a0c1e02af0dd03b5896f71f5d8bff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Date-Manip
 * [new ref]         a8b27154ec7a0c1e02af0dd03b5896f71f5d8bff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8b2715 6.98 bump (rhbz#2371153)