$ git clone -n https://src.fedoraproject.org/rpms/pfstools.git /var/lib/mock/f42-build-865387-173043/root/chroot_tmpdir/scmroot/pfstools
Cloning into '/var/lib/mock/f42-build-865387-173043/root/chroot_tmpdir/scmroot/pfstools'...
$ git fetch origin 5c4f3febccba201a668d4267e40a4fcd3721d816:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pfstools
 * [new ref]         5c4f3febccba201a668d4267e40a4fcd3721d816 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c4f3fe Rebuild for octave 9.2