$ git clone -n https://src.fedoraproject.org/rpms/rust-scoped-tls.git /var/lib/mock/f45-build-44667-816/root/chroot_tmpdir/scmroot/rust-scoped-tls
Cloning into '/var/lib/mock/f45-build-44667-816/root/chroot_tmpdir/scmroot/rust-scoped-tls'...
$ git fetch origin b8c1e4dee1a026ab460d59d450f9d4cc86e4a44e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-scoped-tls
 * [new ref]         b8c1e4dee1a026ab460d59d450f9d4cc86e4a44e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8c1e4d Regenerate with rust2rpm v28