$ git clone -n https://src.fedoraproject.org/rpms/libwpe.git /var/lib/mock/f41-build-side-1-3132738-39664/root/chroot_tmpdir/scmroot/libwpe
Cloning into '/var/lib/mock/f41-build-side-1-3132738-39664/root/chroot_tmpdir/scmroot/libwpe'...
$ git fetch origin 437f5317bd4ae269dfba2dce5496461b5ea1a0ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libwpe
 * [new ref]         437f5317bd4ae269dfba2dce5496461b5ea1a0ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 437f531 Really no longer used by any Fedora packages