$ git clone -n https://src.fedoraproject.org/rpms/rust-petgraph.git /var/lib/mock/f45-build-43818-807/root/chroot_tmpdir/scmroot/rust-petgraph
Cloning into '/var/lib/mock/f45-build-43818-807/root/chroot_tmpdir/scmroot/rust-petgraph'...
$ git fetch origin 23d458ab054e1970dbc2012812a483fdc3ad35e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-petgraph
 * [new ref]         23d458ab054e1970dbc2012812a483fdc3ad35e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23d458a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild