$ git clone -n https://src.fedoraproject.org/rpms/libsndfile.git /var/lib/mock/f40-build-2008425-45372/root/chroot_tmpdir/scmroot/libsndfile
Cloning into '/var/lib/mock/f40-build-2008425-45372/root/chroot_tmpdir/scmroot/libsndfile'...
$ git fetch origin 5a59c1499e2fb6657ee45ade3034c5896eddceeb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsndfile
 * [new ref]         5a59c1499e2fb6657ee45ade3034c5896eddceeb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a59c14 updated to 1.2.2