$ git clone -n https://src.fedoraproject.org/rpms/perl-PDL.git /var/lib/mock/f41-build-847469-163985/root/chroot_tmpdir/scmroot/perl-PDL
Cloning into '/var/lib/mock/f41-build-847469-163985/root/chroot_tmpdir/scmroot/perl-PDL'...
$ git fetch origin e9a264f31f2d3620a3b30677583ade8d680ca3b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PDL
 * [new ref]         e9a264f31f2d3620a3b30677583ade8d680ca3b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9a264f 2.092 bump (rhbz#2310438)