$ git clone -n https://src.fedoraproject.org/rpms/webp-pixbuf-loader.git /var/lib/mock/f40-build-794320-139514/root/chroot_tmpdir/scmroot/webp-pixbuf-loader
Cloning into '/var/lib/mock/f40-build-794320-139514/root/chroot_tmpdir/scmroot/webp-pixbuf-loader'...
$ git fetch origin 7c5e709468e0e161046c0ef964b1d2103386552f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/webp-pixbuf-loader
 * [new ref]         7c5e709468e0e161046c0ef964b1d2103386552f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c5e709 Update to 0.2.6 - Closes rhbz#2260026