$ git clone -n https://src.fedoraproject.org/rpms/rust-structopt-derive.git /var/lib/mock/f45-build-45226-821/root/chroot_tmpdir/scmroot/rust-structopt-derive
Cloning into '/var/lib/mock/f45-build-45226-821/root/chroot_tmpdir/scmroot/rust-structopt-derive'...
$ git fetch origin 7edd7973737e14e9b3649bfc747ac242b5e0c3d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-structopt-derive
 * [new ref]         7edd7973737e14e9b3649bfc747ac242b5e0c3d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7edd797 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild