$ git clone -n https://src.fedoraproject.org/rpms/frama-c.git /var/lib/mock/f39-build-1640588-40147/root/chroot_tmpdir/scmroot/frama-c
Cloning into '/var/lib/mock/f39-build-1640588-40147/root/chroot_tmpdir/scmroot/frama-c'...
$ git fetch origin 775069babd7763a2dec8215dfbe31b8e8e4ae558:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frama-c
 * [new ref]         775069babd7763a2dec8215dfbe31b8e8e4ae558 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 775069b Rebuild for ocaml-ocamlgraph 2.1.0