$ git clone -n https://src.fedoraproject.org/rpms/dump.git /var/lib/mock/f39-build-1462406-33331/root/chroot_tmpdir/scmroot/dump
Cloning into '/var/lib/mock/f39-build-1462406-33331/root/chroot_tmpdir/scmroot/dump'...
$ git fetch origin cf9cb8f4c30b53a65395ef6bed4d4a2ce4e2ddd3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dump
 * [new ref]         cf9cb8f4c30b53a65395ef6bed4d4a2ce4e2ddd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf9cb8f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild