$ git clone -n https://src.fedoraproject.org/rpms/pcp2pdf.git /var/lib/mock/f40-build-2248041-53936/root/chroot_tmpdir/scmroot/pcp2pdf
Cloning into '/var/lib/mock/f40-build-2248041-53936/root/chroot_tmpdir/scmroot/pcp2pdf'...
$ git fetch origin 63503959b57105d41be72ae516748076fb4e6765:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcp2pdf
 * [new ref]         63503959b57105d41be72ae516748076fb4e6765 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6350395 Do not build on ix86 arch as PCP is unavailable