$ git clone -n https://src.fedoraproject.org/rpms/pcp.git /var/lib/mock/f41-build-1045917-19070/root/chroot_tmpdir/scmroot/pcp
Cloning into '/var/lib/mock/f41-build-1045917-19070/root/chroot_tmpdir/scmroot/pcp'...
$ git fetch origin 03fe679133db003a90416bf86de768e82417df17:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcp
 * [new ref]         03fe679133db003a90416bf86de768e82417df17 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03fe679 Perl 5.40 re-rebuild updated packages