$ git clone -n https://src.fedoraproject.org/rpms/pocl.git /var/lib/mock/f42-build-3348056-45005/root/chroot_tmpdir/scmroot/pocl
Cloning into '/var/lib/mock/f42-build-3348056-45005/root/chroot_tmpdir/scmroot/pocl'...
$ git fetch origin a048f787b56d3d5c2f4c61e7264112c911c1f0c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pocl
 * [new ref]         a048f787b56d3d5c2f4c61e7264112c911c1f0c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a048f78 Fixed FTBFS and disabled 32-bit build.