$ git clone -n https://src.fedoraproject.org/rpms/rust-enum-primitive-derive.git /var/lib/mock/f45-build-41463-782/root/chroot_tmpdir/scmroot/rust-enum-primitive-derive
Cloning into '/var/lib/mock/f45-build-41463-782/root/chroot_tmpdir/scmroot/rust-enum-primitive-derive'...
$ git fetch origin e658a666e4947a677c6164581a41bb0914c2d4f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enum-primitive-derive
 * [new ref]         e658a666e4947a677c6164581a41bb0914c2d4f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e658a66 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild