$ git clone -n https://src.fedoraproject.org/rpms/ocaml-logs.git /var/lib/mock/f41-build-851875-166112/root/chroot_tmpdir/scmroot/ocaml-logs
Cloning into '/var/lib/mock/f41-build-851875-166112/root/chroot_tmpdir/scmroot/ocaml-logs'...
$ git fetch origin f582e73e545b48a78641998d651a8aab223efc68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-logs
 * [new ref]         f582e73e545b48a78641998d651a8aab223efc68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f582e73 Rebuild for ocaml-mtime 2.1.0