$ git clone -n https://src.fedoraproject.org/rpms/kf6-kpeople.git /var/lib/mock/f42-flatpak-app-build-60934608-6586083/root/chroot_tmpdir/scmroot/kf6-kpeople
Cloning into '/var/lib/mock/f42-flatpak-app-build-60934608-6586083/root/chroot_tmpdir/scmroot/kf6-kpeople'...
$ git fetch origin 503bf19e4056edca39a8d96c40c6eec612e38ad5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kpeople
 * [new ref]         503bf19e4056edca39a8d96c40c6eec612e38ad5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 503bf19 6.15.0