$ git clone -n https://src.fedoraproject.org/rpms/xmp-plugin-audacious.git /var/lib/mock/f42-build-side-1-3500793-45971/root/chroot_tmpdir/scmroot/xmp-plugin-audacious
Cloning into '/var/lib/mock/f42-build-side-1-3500793-45971/root/chroot_tmpdir/scmroot/xmp-plugin-audacious'...
$ git fetch origin 468279b729694aaf0fbfd8d5236df2775c518cfa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmp-plugin-audacious
 * [new ref]         468279b729694aaf0fbfd8d5236df2775c518cfa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 468279b Merge updated filename extensions list.