$ git clone -n https://src.fedoraproject.org/rpms/rust-prost-derive.git /var/lib/mock/f45-build-44074-810/root/chroot_tmpdir/scmroot/rust-prost-derive
Cloning into '/var/lib/mock/f45-build-44074-810/root/chroot_tmpdir/scmroot/rust-prost-derive'...
$ git fetch origin 57198a4b8b7c8516769fbebb789ab17578b9bbb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prost-derive
 * [new ref]         57198a4b8b7c8516769fbebb789ab17578b9bbb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57198a4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild