$ git clone -n https://src.fedoraproject.org/rpms/swift-lang.git /var/lib/mock/f40-build-1380186-23557/root/chroot_tmpdir/scmroot/swift-lang
Cloning into '/var/lib/mock/f40-build-1380186-23557/root/chroot_tmpdir/scmroot/swift-lang'...
$ git fetch origin ae99554b5c14941cd5658c0ddcd3e73bd7cbfc2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/swift-lang
 * [new ref]         ae99554b5c14941cd5658c0ddcd3e73bd7cbfc2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae99554 Use default Python for Fedora 41+