$ git clone -n https://src.fedoraproject.org/rpms/sssd.git /var/lib/mock/f42-build-3419551-45162/root/chroot_tmpdir/scmroot/sssd
Cloning into '/var/lib/mock/f42-build-3419551-45162/root/chroot_tmpdir/scmroot/sssd'...
$ git fetch origin 63f9b4b173f007790c0d2458a03fb51837d1aa45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sssd
 * [new ref]         63f9b4b173f007790c0d2458a03fb51837d1aa45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63f9b4b Fix riscv64 build