$ git clone -n https://gitee.com/src-anolis-os/eigen3.git /var/lib/mock/dist-an23-loongarch-build-316773-67753/root/chroot_tmpdir/scmroot/eigen3
Cloning into '/var/lib/mock/dist-an23-loongarch-build-316773-67753/root/chroot_tmpdir/scmroot/eigen3'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/eigen3
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a92e5df !1 init pacakge from upstream(waiting for sparsehash ) Merge pull request !1 from happy_orange/a23