$ git clone -n https://src.fedoraproject.org/rpms/pcl.git /var/lib/mock/f42-build-864774-172559/root/chroot_tmpdir/scmroot/pcl
Cloning into '/var/lib/mock/f42-build-864774-172559/root/chroot_tmpdir/scmroot/pcl'...
$ git fetch origin 3a8f9e572a818acfcffa6d8f40cf405687407d9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcl
 * [new ref]         3a8f9e572a818acfcffa6d8f40cf405687407d9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a8f9e5 Rebuild for hdf5 1.14.5