$ git clone -n https://src.fedoraproject.org/rpms/pioneers.git /var/lib/mock/f39-build-1560782-37345/root/chroot_tmpdir/scmroot/pioneers
Cloning into '/var/lib/mock/f39-build-1560782-37345/root/chroot_tmpdir/scmroot/pioneers'...
$ git fetch origin ff3fb32ce37e4cb3fd3642763ee641be48fab1f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pioneers
 * [new ref]         ff3fb32ce37e4cb3fd3642763ee641be48fab1f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff3fb32 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild