$ git clone -n https://src.fedoraproject.org/rpms/alsa-lib.git /var/lib/mock/f39-build-1470361-33891/root/chroot_tmpdir/scmroot/alsa-lib
Cloning into '/var/lib/mock/f39-build-1470361-33891/root/chroot_tmpdir/scmroot/alsa-lib'...
$ git fetch origin 86d56deab268d145d9c40b22fbd799ef32dfb6c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alsa-lib
 * [new ref]         86d56deab268d145d9c40b22fbd799ef32dfb6c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86d56de fix SplitPCM (alsa-ucm)