$ git clone -n https://src.fedoraproject.org/rpms/rust-collection_literals.git /var/lib/mock/f45-build-40865-776/root/chroot_tmpdir/scmroot/rust-collection_literals
Cloning into '/var/lib/mock/f45-build-40865-776/root/chroot_tmpdir/scmroot/rust-collection_literals'...
$ git fetch origin 3773bb1e6f03a2f0a5bd546af045fa10da04acbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-collection_literals
 * [new ref]         3773bb1e6f03a2f0a5bd546af045fa10da04acbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3773bb1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild