$ git clone -n https://src.fedoraproject.org/rpms/openssl.git /var/lib/mock/f42-build-3427580-45332/root/chroot_tmpdir/scmroot/openssl
Cloning into '/var/lib/mock/f42-build-3427580-45332/root/chroot_tmpdir/scmroot/openssl'...
$ git fetch origin 873c695b65b9a6c700ab07e189427650c5d6b7e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openssl
 * [new ref]         873c695b65b9a6c700ab07e189427650c5d6b7e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 873c695 Fixed mistakes in compilation options