$ git clone -n https://src.fedoraproject.org/rpms/phoc.git /var/lib/mock/f40-build-1626149-24118/root/chroot_tmpdir/scmroot/phoc
Cloning into '/var/lib/mock/f40-build-1626149-24118/root/chroot_tmpdir/scmroot/phoc'...
$ git fetch origin a4ada779cd63771d53a9837f5860e4c87fa91b51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/phoc
 * [new ref]         a4ada779cd63771d53a9837f5860e4c87fa91b51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4ada77 Update to 0.40.0