$ git clone -n https://src.fedoraproject.org/rpms/rpm.git /var/lib/mock/f41-build-2655546-27956/root/chroot_tmpdir/scmroot/rpm
Cloning into '/var/lib/mock/f41-build-2655546-27956/root/chroot_tmpdir/scmroot/rpm'...
$ git fetch origin 22bb2476ce1535fc7d501aa41df0a979c7f2632a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rpm
 * [new ref]         22bb2476ce1535fc7d501aa41df0a979c7f2632a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22bb247 Fix division by zero in elfdeps