$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-236571-82311/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-236571-82311/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 27302e9771bb711d675bfe9148075aadf99a0347:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         27302e9771bb711d675bfe9148075aadf99a0347 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27302e9 import firefox-140.9.0-1.tl3.ap.1