$ git clone -n https://src.fedoraproject.org/rpms/alsamixergui.git /var/lib/mock/f41-build-1020072-17995/root/chroot_tmpdir/scmroot/alsamixergui
Cloning into '/var/lib/mock/f41-build-1020072-17995/root/chroot_tmpdir/scmroot/alsamixergui'...
$ git fetch origin b9a81ed0ffe9a169b790fcc1dd624bd8f06fa2c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alsamixergui
 * [new ref]         b9a81ed0ffe9a169b790fcc1dd624bd8f06fa2c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9a81ed Eliminate use of obsolete %patchN syntax (#2283636)