$ git clone -n https://src.fedoraproject.org/rpms/rust-cidr-utils.git /var/lib/mock/f45-build-40801-776/root/chroot_tmpdir/scmroot/rust-cidr-utils
Cloning into '/var/lib/mock/f45-build-40801-776/root/chroot_tmpdir/scmroot/rust-cidr-utils'...
$ git fetch origin c3a5ca8ecdd799b7e7629a776619c02fe7edf94b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cidr-utils
 * [new ref]         c3a5ca8ecdd799b7e7629a776619c02fe7edf94b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3a5ca8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild