$ git clone -n https://src.fedoraproject.org/rpms/rust-maybe-async.git /var/lib/mock/f38-build-side-42-init-devel-1146064-30457/root/chroot_tmpdir/scmroot/rust-maybe-async
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1146064-30457/root/chroot_tmpdir/scmroot/rust-maybe-async'...
$ git fetch origin 41e741f995994d038c0b25de60110c233e0711cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-maybe-async
 * [new ref]         41e741f995994d038c0b25de60110c233e0711cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41e741f Initial package