$ git clone -n https://src.fedoraproject.org/rpms/rust-pipe.git /var/lib/mock/f38-build-side-43-rust-devel-1412737-31443/root/chroot_tmpdir/scmroot/rust-pipe
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1412737-31443/root/chroot_tmpdir/scmroot/rust-pipe'...
$ git fetch origin f29b0072c52b73ecce985e5d5e3956df1fb79a54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pipe
 * [new ref]         f29b0072c52b73ecce985e5d5e3956df1fb79a54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f29b007 Regenerate with rust2rpm v24