$ git clone -n https://src.fedoraproject.org/rpms/rust-cidr.git /var/lib/mock/f45-build-40780-776/root/chroot_tmpdir/scmroot/rust-cidr
Cloning into '/var/lib/mock/f45-build-40780-776/root/chroot_tmpdir/scmroot/rust-cidr'...
$ git fetch origin 77642e4004973a510eadf070450a174e2b19df85:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cidr
 * [new ref]         77642e4004973a510eadf070450a174e2b19df85 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77642e4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild