$ git clone -n https://src.fedoraproject.org/rpms/rust-serde_assert.git /var/lib/mock/f45-build-44851-818/root/chroot_tmpdir/scmroot/rust-serde_assert
Cloning into '/var/lib/mock/f45-build-44851-818/root/chroot_tmpdir/scmroot/rust-serde_assert'...
$ git fetch origin aedb0ae4f962ab1edda6818c63d973572a2cf5d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serde_assert
 * [new ref]         aedb0ae4f962ab1edda6818c63d973572a2cf5d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aedb0ae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild