$ git clone -n https://src.fedoraproject.org/rpms/alsa-lib.git /var/lib/mock/f40-build-787442-134772/root/chroot_tmpdir/scmroot/alsa-lib
Cloning into '/var/lib/mock/f40-build-787442-134772/root/chroot_tmpdir/scmroot/alsa-lib'...
$ git fetch origin d50c4594a0a6f8b9ef6b86593e11d002b74055d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alsa-lib
 * [new ref]         d50c4594a0a6f8b9ef6b86593e11d002b74055d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d50c459 update 1.2.11 source package