$ git clone -n https://gitee.com/yingwai/kexec-tools.git /var/lib/mock/dist-an23-build-535769-82039/root/chroot_tmpdir/scmroot/kexec-tools
Cloning into '/var/lib/mock/dist-an23-build-535769-82039/root/chroot_tmpdir/scmroot/kexec-tools'...
$ git fetch origin e4a26da95c14d365ff2cfabee4e308d59585e3e2:KOJI_FETCH_HEAD
From https://gitee.com/yingwai/kexec-tools
 * [new ref]         e4a26da95c14d365ff2cfabee4e308d59585e3e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4a26da add support for riscv kexec kdump