$ git clone -n https://src.fedoraproject.org/rpms/rust-rustbus_derive.git /var/lib/mock/f45-build-44575-815/root/chroot_tmpdir/scmroot/rust-rustbus_derive
Cloning into '/var/lib/mock/f45-build-44575-815/root/chroot_tmpdir/scmroot/rust-rustbus_derive'...
$ git fetch origin 8c4750ae255db2be404a5d943a2eb8e0f8f4e23f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustbus_derive
 * [new ref]         8c4750ae255db2be404a5d943a2eb8e0f8f4e23f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c4750a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild