$ git clone -n https://src.fedoraproject.org/rpms/coq.git /var/lib/mock/f40-build-793074-138784/root/chroot_tmpdir/scmroot/coq
Cloning into '/var/lib/mock/f40-build-793074-138784/root/chroot_tmpdir/scmroot/coq'...
$ git fetch origin ef4484f9a526bfdd0d5aa12e8b8319d371d8b00d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coq
 * [new ref]         ef4484f9a526bfdd0d5aa12e8b8319d371d8b00d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef4484f Rebuild for ocaml-lablgtk3 3.1.4