$ git clone -n https://src.fedoraproject.org/rpms/rust-liboverdrop.git /var/lib/mock/f45-build-42946-797/root/chroot_tmpdir/scmroot/rust-liboverdrop
Cloning into '/var/lib/mock/f45-build-42946-797/root/chroot_tmpdir/scmroot/rust-liboverdrop'...
$ git fetch origin 78437413e3b70d7a716c7b0f4801085d299bc59a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-liboverdrop
 * [new ref]         78437413e3b70d7a716c7b0f4801085d299bc59a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7843741 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild