$ git clone -n https://src.fedoraproject.org/rpms/rust-sequoia-autocrypt.git /var/lib/mock/f45-build-44756-816/root/chroot_tmpdir/scmroot/rust-sequoia-autocrypt
Cloning into '/var/lib/mock/f45-build-44756-816/root/chroot_tmpdir/scmroot/rust-sequoia-autocrypt'...
$ git fetch origin 5d68c3be86570259628808d6665c03100cad4041:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sequoia-autocrypt
 * [new ref]         5d68c3be86570259628808d6665c03100cad4041 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d68c3b Build with the default Fedora crypto backend (OpenSSL)