$ git clone -n https://gitee.com/src-anolis-os/dwarves.git /var/lib/mock/dist-an7_9-updates-build-370998-71186/root/chroot_tmpdir/scmroot/dwarves
Cloning into '/var/lib/mock/dist-an7_9-updates-build-370998-71186/root/chroot_tmpdir/scmroot/dwarves'...
$ git fetch origin a7:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/dwarves
 * [new branch]      a7         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1503bf0 updates to dwarves-1.17-1.el7.src.rpm