$ git clone -n https://gitee.com/mgb01105731/libguestfs_1.git /var/lib/mock/dist-an23.2-build-425910-72979/root/chroot_tmpdir/scmroot/libguestfs_1
Cloning into '/var/lib/mock/dist-an23.2-build-425910-72979/root/chroot_tmpdir/scmroot/libguestfs_1'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libguestfs_1
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b81ded Update to 1.54.0 from 1.50.1