$ git clone -n https://src.fedoraproject.org/rpms/rust-target-lexicon.git /var/lib/mock/f45-build-45344-822/root/chroot_tmpdir/scmroot/rust-target-lexicon
Cloning into '/var/lib/mock/f45-build-45344-822/root/chroot_tmpdir/scmroot/rust-target-lexicon'...
$ git fetch origin bd385ac216022dd9673abdf74a3921c2c967f081:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-target-lexicon
 * [new ref]         bd385ac216022dd9673abdf74a3921c2c967f081 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd385ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild