$ git clone -n https://src.fedoraproject.org/rpms/frama-c.git /var/lib/mock/f41-build-801603-13688/root/chroot_tmpdir/scmroot/frama-c
Cloning into '/var/lib/mock/f41-build-801603-13688/root/chroot_tmpdir/scmroot/frama-c'...
$ git fetch origin 4e3686ace0d09932c1f0375740660f1a42ae47c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frama-c
 * [new ref]         4e3686ace0d09932c1f0375740660f1a42ae47c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e3686a Version 29.0