$ git clone -n https://src.fedoraproject.org/rpms/pcp.git /var/lib/mock/f40-build-1415160-23563/root/chroot_tmpdir/scmroot/pcp
Cloning into '/var/lib/mock/f40-build-1415160-23563/root/chroot_tmpdir/scmroot/pcp'...
$ git fetch origin 232a46c3b3e1ed3133bd562b3a72cf1e0dbaddf5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcp
 * [new ref]         232a46c3b3e1ed3133bd562b3a72cf1e0dbaddf5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 232a46c Revert changes relating to 64-bit time_t on 32-bit platforms