$ git clone -n https://src.fedoraproject.org/rpms/fim.git /var/lib/mock/f39-build-1506778-35206/root/chroot_tmpdir/scmroot/fim
Cloning into '/var/lib/mock/f39-build-1506778-35206/root/chroot_tmpdir/scmroot/fim'...
$ git fetch origin a20900e0b17aff6130f5e7ae973f593fc55f5318:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fim
 * [new ref]         a20900e0b17aff6130f5e7ae973f593fc55f5318 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a20900e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild