$ git clone -n https://gitee.com/wenyuzifang/javapackages-tools.git /var/lib/mock/dist-an23-build-450220-73456/root/chroot_tmpdir/scmroot/javapackages-tools
Cloning into '/var/lib/mock/dist-an23-build-450220-73456/root/chroot_tmpdir/scmroot/javapackages-tools'...
$ git fetch origin db9ab48cb9b90dcac1bffb55f906d8a49929eea0:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/javapackages-tools
 * [new ref]         db9ab48cb9b90dcac1bffb55f906d8a49929eea0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db9ab48 Update code from upstream