$ git clone -n https://src.fedoraproject.org/rpms/plexus-interpolation.git /var/lib/mock/f40-build-2425653-60598/root/chroot_tmpdir/scmroot/plexus-interpolation
Cloning into '/var/lib/mock/f40-build-2425653-60598/root/chroot_tmpdir/scmroot/plexus-interpolation'...
$ git fetch origin 6c37687bae5d178aff1d29c4bd157859584b4b72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plexus-interpolation
 * [new ref]         6c37687bae5d178aff1d29c4bd157859584b4b72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c37687 Update to upstream version 1.27