$ git clone -n https://gitee.com/xht8015/libdb.git /var/lib/mock/dist-an23-build-480136-74220/root/chroot_tmpdir/scmroot/libdb
Cloning into '/var/lib/mock/dist-an23-build-480136-74220/root/chroot_tmpdir/scmroot/libdb'...
$ git fetch origin 8155064c0ce9370ea1d106ffb5fcc3546a7a2f39:KOJI_FETCH_HEAD
From https://gitee.com/xht8015/libdb
 * [new ref]         8155064c0ce9370ea1d106ffb5fcc3546a7a2f39 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8155064 remove unuse file