$ git clone -n https://src.fedoraproject.org/rpms/rust-cipher.git /var/lib/mock/f45-build-40797-776/root/chroot_tmpdir/scmroot/rust-cipher
Cloning into '/var/lib/mock/f45-build-40797-776/root/chroot_tmpdir/scmroot/rust-cipher'...
$ git fetch origin 7808e678ee09a7cbe98349633edbb9ada9e2167d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cipher
 * [new ref]         7808e678ee09a7cbe98349633edbb9ada9e2167d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7808e67 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild