$ git clone -n https://src.fedoraproject.org/rpms/rust-rustyline.git /var/lib/mock/f45-build-44627-815/root/chroot_tmpdir/scmroot/rust-rustyline
Cloning into '/var/lib/mock/f45-build-44627-815/root/chroot_tmpdir/scmroot/rust-rustyline'...
$ git fetch origin 3c9d6bf7538a1a4cd2bc6a95e28fc448da51ff49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustyline
 * [new ref]         3c9d6bf7538a1a4cd2bc6a95e28fc448da51ff49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c9d6bf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild