$ git clone -n https://gitee.com/kanghou-silver/man-db.git /var/lib/mock/dist-an8.8-build-278625-64448/root/chroot_tmpdir/scmroot/man-db
Cloning into '/var/lib/mock/dist-an8.8-build-278625-64448/root/chroot_tmpdir/scmroot/man-db'...
$ git fetch origin 462cfaf2fdde5b2b85fe3d5f8374c5f7c06d534e:KOJI_FETCH_HEAD
From https://gitee.com/kanghou-silver/man-db
 * [new ref]         462cfaf2fdde5b2b85fe3d5f8374c5f7c06d534e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 462cfaf add sw