$ git clone -n https://src.fedoraproject.org/rpms/pcs.git /var/lib/mock/f40-build-2282173-55523/root/chroot_tmpdir/scmroot/pcs
Cloning into '/var/lib/mock/f40-build-2282173-55523/root/chroot_tmpdir/scmroot/pcs'...
$ git fetch origin 3a06ce659fefdbc9876f96e91b6e19303f798d0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcs
 * [new ref]         3a06ce659fefdbc9876f96e91b6e19303f798d0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a06ce6 pcs-0.11.7-1