$ git clone -n https://gitee.com/mgb01105731/nim-srpm-macros.git /var/lib/mock/dist-an23-build-294945-65760/root/chroot_tmpdir/scmroot/nim-srpm-macros
Cloning into '/var/lib/mock/dist-an23-build-294945-65760/root/chroot_tmpdir/scmroot/nim-srpm-macros'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/nim-srpm-macros
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3b477b init upstream from version 3