$ git clone -n https://src.fedoraproject.org/rpms/readstat.git /var/lib/mock/f45-build-34390-685/root/chroot_tmpdir/scmroot/readstat
Cloning into '/var/lib/mock/f45-build-34390-685/root/chroot_tmpdir/scmroot/readstat'...
$ git fetch origin 420bb38f43aaa9aaa44d27144c23d1fbccbb7053:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/readstat
 * [new ref]         420bb38f43aaa9aaa44d27144c23d1fbccbb7053 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 420bb38 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild