$ git clone -n https://gitee.com/Weisson/diffutils.git /var/lib/mock/dist-an8.9-build-365017-71163/root/chroot_tmpdir/scmroot/diffutils
Cloning into '/var/lib/mock/dist-an8.9-build-365017-71163/root/chroot_tmpdir/scmroot/diffutils'...
$ git fetch origin 7b336c60e277be02b4c486d37244d249e8d96525:KOJI_FETCH_HEAD
From https://gitee.com/Weisson/diffutils
 * [new ref]         7b336c60e277be02b4c486d37244d249e8d96525 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b336c6 Resolves: #1975121, Handle SIGSTKSZ no longer being a constant.