$ git clone -n https://gitee.com/ocs-bot/re2c.git /var/lib/mock/dist-ocs23-build-116375-8061/root/chroot_tmpdir/scmroot/re2c
Cloning into '/var/lib/mock/dist-ocs23-build-116375-8061/root/chroot_tmpdir/scmroot/re2c'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-bot/re2c
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e635718 add unpackaged files