$ git clone -n https://src.fedoraproject.org/rpms/rust-serde_tuple.git /var/lib/mock/f45-build-44833-818/root/chroot_tmpdir/scmroot/rust-serde_tuple
Cloning into '/var/lib/mock/f45-build-44833-818/root/chroot_tmpdir/scmroot/rust-serde_tuple'...
$ git fetch origin 4485ebc4ad6de3eef7e2536109a2514525c24d64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-serde_tuple
 * [new ref]         4485ebc4ad6de3eef7e2536109a2514525c24d64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4485ebc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild