$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-241198-82819/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-241198-82819/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin f55c6b49fa43c0a5c6468cc3f31bc21d3c4ac0d0:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         f55c6b49fa43c0a5c6468cc3f31bc21d3c4ac0d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f55c6b4 import firefox-140.11.0-1.tl3.ap.1