$ git clone -n https://src.fedoraproject.org/rpms/pssh.git /var/lib/mock/f45-build-29004-634/root/chroot_tmpdir/scmroot/pssh
Cloning into '/var/lib/mock/f45-build-29004-634/root/chroot_tmpdir/scmroot/pssh'...
$ git fetch origin 6552565de14af37486e7546ed2df5225c7f1cdf3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pssh
 * [new ref]         6552565de14af37486e7546ed2df5225c7f1cdf3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6552565 Update to 2.3.6