$ git clone -n https://gitee.com/winterddd/ras-tools.git /var/lib/mock/dist-an8.6-build-181914-60012/root/chroot_tmpdir/scmroot/ras-tools
Cloning into '/var/lib/mock/dist-an8.6-build-181914-60012/root/chroot_tmpdir/scmroot/ras-tools'...
$ git fetch origin 94eaab019b979ec7b159bd616cc11acdb2863f18:KOJI_FETCH_HEAD
From https://gitee.com/winterddd/ras-tools
 * [new ref]         94eaab019b979ec7b159bd616cc11acdb2863f18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94eaab0 add ras-tools src and rpmspec