$ git clone -n https://src.fedoraproject.org/rpms/rust-rstest_macros.git /var/lib/mock/f45-build-44488-814/root/chroot_tmpdir/scmroot/rust-rstest_macros
Cloning into '/var/lib/mock/f45-build-44488-814/root/chroot_tmpdir/scmroot/rust-rstest_macros'...
$ git fetch origin e9963f3396e76b54fd22ede8f6065a6ae83629f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rstest_macros
 * [new ref]         e9963f3396e76b54fd22ede8f6065a6ae83629f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9963f3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild