$ git clone -n https://src.fedoraproject.org/rpms/rust-v_frame.git /var/lib/mock/f45-build-46019-830/root/chroot_tmpdir/scmroot/rust-v_frame
Cloning into '/var/lib/mock/f45-build-46019-830/root/chroot_tmpdir/scmroot/rust-v_frame'...
$ git fetch origin 3512079bebbb1578e5842da88582007cff205258:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-v_frame
 * [new ref]         3512079bebbb1578e5842da88582007cff205258 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3512079 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild