$ git clone -n https://src.fedoraproject.org/rpms/rust-pnet_macros_support.git /var/lib/mock/f45-build-43977-809/root/chroot_tmpdir/scmroot/rust-pnet_macros_support
Cloning into '/var/lib/mock/f45-build-43977-809/root/chroot_tmpdir/scmroot/rust-pnet_macros_support'...
$ git fetch origin 6b3fa1dd3ff37c28aad7f55384600e0c8e9bb10d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pnet_macros_support
 * [new ref]         6b3fa1dd3ff37c28aad7f55384600e0c8e9bb10d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b3fa1d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild