$ git clone -n https://gitee.com/src-anolis-os/alien.git /var/lib/mock/dist-an8-epao-build-418638-72600/root/chroot_tmpdir/scmroot/alien
Cloning into '/var/lib/mock/dist-an8-epao-build-418638-72600/root/chroot_tmpdir/scmroot/alien'...
$ git fetch origin a8:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/alien
 * [new branch]      a8         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 873a6fd init package