$ git clone -n https://src.fedoraproject.org/rpms/rust-minimal-lexical.git /var/lib/mock/f45-build-43233-801/root/chroot_tmpdir/scmroot/rust-minimal-lexical
Cloning into '/var/lib/mock/f45-build-43233-801/root/chroot_tmpdir/scmroot/rust-minimal-lexical'...
$ git fetch origin a7fa50b674cb9e81f2a9372db734f67492643829:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-minimal-lexical
 * [new ref]         a7fa50b674cb9e81f2a9372db734f67492643829 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7fa50b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild