$ git clone -n https://gitee.com/mgb01105731/gstreamer1-plugins-ugly-free.git /var/lib/mock/dist-an23-build-285505-64769/root/chroot_tmpdir/scmroot/gstreamer1-plugins-ugly-free
Cloning into '/var/lib/mock/dist-an23-build-285505-64769/root/chroot_tmpdir/scmroot/gstreamer1-plugins-ugly-free'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/gstreamer1-plugins-ugly-free
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3520dc init upstream from version 1.22.3