$ git clone -n https://gitee.com/xht8015/libdb.git /var/lib/mock/dist-an23-build-482242-74252/root/chroot_tmpdir/scmroot/libdb
Cloning into '/var/lib/mock/dist-an23-build-482242-74252/root/chroot_tmpdir/scmroot/libdb'...
$ git fetch origin cca45bd90c574d926b5885a7f7758799eaa427c4:KOJI_FETCH_HEAD
From https://gitee.com/xht8015/libdb
 * [new ref]         cca45bd90c574d926b5885a7f7758799eaa427c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cca45bd Add support for riscv64