$ git clone -n https://src.fedoraproject.org/rpms/rsvndump.git /var/lib/mock/f45-build-34693-690/root/chroot_tmpdir/scmroot/rsvndump
Cloning into '/var/lib/mock/f45-build-34693-690/root/chroot_tmpdir/scmroot/rsvndump'...
$ git fetch origin 36a40d2a0e968dab773fd52a176cacce2d5a5c6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rsvndump
 * [new ref]         36a40d2a0e968dab773fd52a176cacce2d5a5c6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36a40d2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild