$ git clone -n https://src.fedoraproject.org/rpms/valgrind.git /var/lib/mock/f39-build-2455906-61439/root/chroot_tmpdir/scmroot/valgrind
Cloning into '/var/lib/mock/f39-build-2455906-61439/root/chroot_tmpdir/scmroot/valgrind'...
$ git fetch origin ebfe3bd913aecefa5162a004532d37d8315a1712:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/valgrind
 * [new ref]         ebfe3bd913aecefa5162a004532d37d8315a1712 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebfe3bd 3.22.0-4 - Prep for migration to SPDX identifiers