$ git clone -n https://gitee.com/yangcheng1203/guestfs-tools.git /var/lib/mock/dist-an23.3-build-451509-73480/root/chroot_tmpdir/scmroot/guestfs-tools
Cloning into '/var/lib/mock/dist-an23.3-build-451509-73480/root/chroot_tmpdir/scmroot/guestfs-tools'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/yangcheng1203/guestfs-tools
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d397bc5 Init package from upstream