$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-glob.git /var/lib/mock/f38-build-side-43-rust-devel-1417482-31459/root/chroot_tmpdir/scmroot/rust-nu-glob
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1417482-31459/root/chroot_tmpdir/scmroot/rust-nu-glob'...
$ git fetch origin f515a8d08debada94ddf4ad9e52f9a821fc469b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-glob
 * [new ref]         f515a8d08debada94ddf4ad9e52f9a821fc469b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f515a8d Remove old source