$ git clone -n https://gitee.com/ocs-upgrade/gc.git /var/lib/mock/dist-ocs23-build-212902-15387/root/chroot_tmpdir/scmroot/gc
Cloning into '/var/lib/mock/dist-ocs23-build-212902-15387/root/chroot_tmpdir/scmroot/gc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/gc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e47cf70 Upgrade to version 8.2.6