$ git clone -n https://src.fedoraproject.org/rpms/rust-hecs.git /var/lib/mock/f45-build-42294-792/root/chroot_tmpdir/scmroot/rust-hecs
Cloning into '/var/lib/mock/f45-build-42294-792/root/chroot_tmpdir/scmroot/rust-hecs'...
$ git fetch origin dc22ca0aef3db9a3b7a8bae2ad94ba4a14e24376:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hecs
 * [new ref]         dc22ca0aef3db9a3b7a8bae2ad94ba4a14e24376 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc22ca0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild