$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-100843-65086/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-100843-65086/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin cfca48c2bdca848a5209a0afd8f6db3dc02cc0f9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         cfca48c2bdca848a5209a0afd8f6db3dc02cc0f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfca48c import firefox-115.15.0-1.tl4.ap.1