$ git clone -n https://src.fedoraproject.org/rpms/ocaml-mysql.git /var/lib/mock/f45-build-20757-573/root/chroot_tmpdir/scmroot/ocaml-mysql
Cloning into '/var/lib/mock/f45-build-20757-573/root/chroot_tmpdir/scmroot/ocaml-mysql'...
$ git fetch origin 953662953b99fa33d7e82a49b16149396569bef7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-mysql
 * [new ref]         953662953b99fa33d7e82a49b16149396569bef7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9536629 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild