$ git clone -n https://gitee.com/opencloudos-stream/libev /var/lib/mock/dist-ocs23-build-110297-7003/root/chroot_tmpdir/scmroot/libev
Cloning into '/var/lib/mock/dist-ocs23-build-110297-7003/root/chroot_tmpdir/scmroot/libev'...
$ git fetch origin 6f53a320bd261363a492d35c73b437a065f0b9e1:KOJI_FETCH_HEAD
fatal: remote error: upload-pack: not our ref 6f53a320bd261363a492d35c73b437a065f0b9e1
$ git reset --hard 6f53a320bd261363a492d35c73b437a065f0b9e1
fatal: Could not parse object '6f53a320bd261363a492d35c73b437a065f0b9e1'.