$ git clone -n https://src.fedoraproject.org/rpms/rust-alsa.git /var/lib/mock/f38-build-side-43-rust-devel-1411650-31436/root/chroot_tmpdir/scmroot/rust-alsa
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411650-31436/root/chroot_tmpdir/scmroot/rust-alsa'...
$ git fetch origin 87c335b9377fba5b5523b45f7701bde95ba7265c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alsa
 * [new ref]         87c335b9377fba5b5523b45f7701bde95ba7265c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87c335b Update to 0.8.1; Fixes: RHBZ#2237891