$ git clone -n https://src.fedoraproject.org/rpms/perl-PDL.git /var/lib/mock/f45-build-25505-611/root/chroot_tmpdir/scmroot/perl-PDL
Cloning into '/var/lib/mock/f45-build-25505-611/root/chroot_tmpdir/scmroot/perl-PDL'...
$ git fetch origin 0d5499081757f853c50c9c08a688c3fd5972fe39:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PDL
 * [new ref]         0d5499081757f853c50c9c08a688c3fd5972fe39 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d54990 2.106 bump (rhbz#2519372)