$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-252728-84229/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-252728-84229/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 648f7b39ce6e8d09e33ca5d7c206501443b70915:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         648f7b39ce6e8d09e33ca5d7c206501443b70915 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 648f7b3 import firefox-140.17.0-1.tl3.ap.1