$ git clone -n https://src.fedoraproject.org/rpms/frama-c.git /var/lib/mock/f42-build-866030-173661/root/chroot_tmpdir/scmroot/frama-c
Cloning into '/var/lib/mock/f42-build-866030-173661/root/chroot_tmpdir/scmroot/frama-c'...
$ git fetch origin fd9c089738fbf9fda957e91e605ed1d094f24388:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frama-c
 * [new ref]         fd9c089738fbf9fda957e91e605ed1d094f24388 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd9c089 OCaml 5.3.0 rebuild for Fedora 42