$ git clone -n https://src.fedoraproject.org/rpms/rust-static_assertions.git /var/lib/mock/f45-build-45123-821/root/chroot_tmpdir/scmroot/rust-static_assertions
Cloning into '/var/lib/mock/f45-build-45123-821/root/chroot_tmpdir/scmroot/rust-static_assertions'...
$ git fetch origin a38717241f8a536efb45528882cec1f1f966ba09:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-static_assertions
 * [new ref]         a38717241f8a536efb45528882cec1f1f966ba09 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a387172 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild